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Finding the Fourth Proportional to 247,591.47, 371,440.51 and 76,809.72

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Solution

The fourth proportional to 247,591.47, 371,440.51 and 76,809.72 is: 115,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,591.47 : 371,440.51 = 76,809.72 : x
  2. Step 2: Convert to fraction form
    247,591.47/371,440.51 = 76,809.72/x
  3. Step 3: Cross multiply
    247,591.47x = 371,440.51 × 76,809.72
  4. Step 4: Simplify right side
    247,591.47x = 28,530,241,569.76
  5. Step 5: Solve for x
    x = 28,530,241,569.76/247,591.47
  6. Step 6: Final answer
    x = 115,231.12

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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.