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Finding the Fourth Proportional to 424,834.40, 637,251.60 and 129,346.40

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Solution

The fourth proportional to 424,834.40, 637,251.60 and 129,346.40 is: 194,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,834.40 : 637,251.60 = 129,346.40 : x
  2. Step 2: Convert to fraction form
    424,834.40/637,251.60 = 129,346.40/x
  3. Step 3: Cross multiply
    424,834.40x = 637,251.60 × 129,346.40
  4. Step 4: Simplify right side
    424,834.40x = 82,426,200,354.24
  5. Step 5: Solve for x
    x = 82,426,200,354.24/424,834.40
  6. Step 6: Final answer
    x = 194,019.60

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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.