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Finding the Fourth Proportional to 542,220.30, 813,330.45 and 402,252.30

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Solution

The fourth proportional to 542,220.30, 813,330.45 and 402,252.30 is: 603,378.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,220.30 : 813,330.45 = 402,252.30 : x
  2. Step 2: Convert to fraction form
    542,220.30/813,330.45 = 402,252.30/x
  3. Step 3: Cross multiply
    542,220.30x = 813,330.45 × 402,252.30
  4. Step 4: Simplify right side
    542,220.30x = 327,164,044,172.54
  5. Step 5: Solve for x
    x = 327,164,044,172.54/542,220.30
  6. Step 6: Final answer
    x = 603,378.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.