Home / 438,416.30-657,624.45-202,220.30

Finding the Fourth Proportional to 438,416.30, 657,624.45 and 202,220.30

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Solution

The fourth proportional to 438,416.30, 657,624.45 and 202,220.30 is: 303,330.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,416.30 : 657,624.45 = 202,220.30 : x
  2. Step 2: Convert to fraction form
    438,416.30/657,624.45 = 202,220.30/x
  3. Step 3: Cross multiply
    438,416.30x = 657,624.45 × 202,220.30
  4. Step 4: Simplify right side
    438,416.30x = 132,985,013,566.34
  5. Step 5: Solve for x
    x = 132,985,013,566.34/438,416.30
  6. Step 6: Final answer
    x = 303,330.45

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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.