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Finding the Fourth Proportional to 425,516.18, 587,170.28 and 253,399.91

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Solution

The fourth proportional to 425,516.18, 587,170.28 and 253,399.91 is: 349,666.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,516.18 : 587,170.28 = 253,399.91 : x
  2. Step 2: Convert to fraction form
    425,516.18/587,170.28 = 253,399.91/x
  3. Step 3: Cross multiply
    425,516.18x = 587,170.28 × 253,399.91
  4. Step 4: Simplify right side
    425,516.18x = 148,788,894,839.68
  5. Step 5: Solve for x
    x = 148,788,894,839.68/425,516.18
  6. Step 6: Final answer
    x = 349,666.83

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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.