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Finding the Fourth Proportional to 239,638, 359,425.77 and 71,154.94

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Solution

The fourth proportional to 239,638, 359,425.77 and 71,154.94 is: 106,723.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,638 : 359,425.77 = 71,154.94 : x
  2. Step 2: Convert to fraction form
    239,638/359,425.77 = 71,154.94/x
  3. Step 3: Cross multiply
    239,638x = 359,425.77 × 71,154.94
  4. Step 4: Simplify right side
    239,638x = 25,574,919,098.80
  5. Step 5: Solve for x
    x = 25,574,919,098.80/239,638
  6. Step 6: Final answer
    x = 106,723.14

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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.