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Finding the Fourth Proportional to 247,151.78, 341,084.15 and 139,731.81

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Solution

The fourth proportional to 247,151.78, 341,084.15 and 139,731.81 is: 192,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,151.78 : 341,084.15 = 139,731.81 : x
  2. Step 2: Convert to fraction form
    247,151.78/341,084.15 = 139,731.81/x
  3. Step 3: Cross multiply
    247,151.78x = 341,084.15 × 139,731.81
  4. Step 4: Simplify right side
    247,151.78x = 47,660,305,641.81
  5. Step 5: Solve for x
    x = 47,660,305,641.81/247,151.78
  6. Step 6: Final answer
    x = 192,838.21

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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.