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Finding the Fourth Proportional to 253,117.92, 379,720.56 and 103,439.52

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Solution

The fourth proportional to 253,117.92, 379,720.56 and 103,439.52 is: 155,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,117.92 : 379,720.56 = 103,439.52 : x
  2. Step 2: Convert to fraction form
    253,117.92/379,720.56 = 103,439.52/x
  3. Step 3: Cross multiply
    253,117.92x = 379,720.56 × 103,439.52
  4. Step 4: Simplify right side
    253,117.92x = 39,278,112,460.53
  5. Step 5: Solve for x
    x = 39,278,112,460.53/253,117.92
  6. Step 6: Final answer
    x = 155,177.13

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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.