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Finding the Fourth Proportional to 224,500.79, 309,864.20 and 129,062.94

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Solution

The fourth proportional to 224,500.79, 309,864.20 and 129,062.94 is: 178,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,500.79 : 309,864.20 = 129,062.94 : x
  2. Step 2: Convert to fraction form
    224,500.79/309,864.20 = 129,062.94/x
  3. Step 3: Cross multiply
    224,500.79x = 309,864.20 × 129,062.94
  4. Step 4: Simplify right side
    224,500.79x = 39,991,984,007.43
  5. Step 5: Solve for x
    x = 39,991,984,007.43/224,500.79
  6. Step 6: Final answer
    x = 178,137.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.