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Finding the Fourth Proportional to 425,359.77, 587,037.85 and 317,742.97

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Solution

The fourth proportional to 425,359.77, 587,037.85 and 317,742.97 is: 438,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,359.77 : 587,037.85 = 317,742.97 : x
  2. Step 2: Convert to fraction form
    425,359.77/587,037.85 = 317,742.97/x
  3. Step 3: Cross multiply
    425,359.77x = 587,037.85 × 317,742.97
  4. Step 4: Simplify right side
    425,359.77x = 186,527,149,961.42
  5. Step 5: Solve for x
    x = 186,527,149,961.42/425,359.77
  6. Step 6: Final answer
    x = 438,516.20

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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.