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Finding the Fourth Proportional to 239,839.61, 359,696.74 and 71,314.56

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Solution

The fourth proportional to 239,839.61, 359,696.74 and 71,314.56 is: 106,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,839.61 : 359,696.74 = 71,314.56 : x
  2. Step 2: Convert to fraction form
    239,839.61/359,696.74 = 71,314.56/x
  3. Step 3: Cross multiply
    239,839.61x = 359,696.74 × 71,314.56
  4. Step 4: Simplify right side
    239,839.61x = 25,651,614,746.53
  5. Step 5: Solve for x
    x = 25,651,614,746.53/239,839.61
  6. Step 6: Final answer
    x = 106,953.20

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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.