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Finding the Fourth Proportional to 247,881.71, 371,831.36 and 79,380.12

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Solution

The fourth proportional to 247,881.71, 371,831.36 and 79,380.12 is: 119,073.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,881.71 : 371,831.36 = 79,380.12 : x
  2. Step 2: Convert to fraction form
    247,881.71/371,831.36 = 79,380.12/x
  3. Step 3: Cross multiply
    247,881.71x = 371,831.36 × 79,380.12
  4. Step 4: Simplify right side
    247,881.71x = 29,516,017,976.56
  5. Step 5: Solve for x
    x = 29,516,017,976.56/247,881.71
  6. Step 6: Final answer
    x = 119,073.00

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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.