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Finding the Fourth Proportional to 247,864.48, 342,053.88 and 134,687.20

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Solution

The fourth proportional to 247,864.48, 342,053.88 and 134,687.20 is: 185,868.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,864.48 : 342,053.88 = 134,687.20 : x
  2. Step 2: Convert to fraction form
    247,864.48/342,053.88 = 134,687.20/x
  3. Step 3: Cross multiply
    247,864.48x = 342,053.88 × 134,687.20
  4. Step 4: Simplify right side
    247,864.48x = 46,070,279,346.34
  5. Step 5: Solve for x
    x = 46,070,279,346.34/247,864.48
  6. Step 6: Final answer
    x = 185,868.82

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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.