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Finding the Fourth Proportional to 542,237.55, 813,356.33 and 402,269.55

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Solution

The fourth proportional to 542,237.55, 813,356.33 and 402,269.55 is: 603,404.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,237.55 : 813,356.33 = 402,269.55 : x
  2. Step 2: Convert to fraction form
    542,237.55/813,356.33 = 402,269.55/x
  3. Step 3: Cross multiply
    542,237.55x = 813,356.33 × 402,269.55
  4. Step 4: Simplify right side
    542,237.55x = 327,188,482,847.40
  5. Step 5: Solve for x
    x = 327,188,482,847.40/542,237.55
  6. Step 6: Final answer
    x = 603,404.33

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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.