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Finding the Fourth Proportional to 239,691.54, 359,284.55 and 79,724.76

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Solution

The fourth proportional to 239,691.54, 359,284.55 and 79,724.76 is: 119,503.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,691.54 : 359,284.55 = 79,724.76 : x
  2. Step 2: Convert to fraction form
    239,691.54/359,284.55 = 79,724.76/x
  3. Step 3: Cross multiply
    239,691.54x = 359,284.55 × 79,724.76
  4. Step 4: Simplify right side
    239,691.54x = 28,643,874,420.80
  5. Step 5: Solve for x
    x = 28,643,874,420.80/239,691.54
  6. Step 6: Final answer
    x = 119,503.07

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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.