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Finding the Fourth Proportional to 402,129.40, 603,194.10 and 244,406.20

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Solution

The fourth proportional to 402,129.40, 603,194.10 and 244,406.20 is: 366,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,129.40 : 603,194.10 = 244,406.20 : x
  2. Step 2: Convert to fraction form
    402,129.40/603,194.10 = 244,406.20/x
  3. Step 3: Cross multiply
    402,129.40x = 603,194.10 × 244,406.20
  4. Step 4: Simplify right side
    402,129.40x = 147,424,377,843.42
  5. Step 5: Solve for x
    x = 147,424,377,843.42/402,129.40
  6. Step 6: Final answer
    x = 366,609.30

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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.