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Finding the Fourth Proportional to 247,393.17, 371,071.08 and 78,906.69

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Solution

The fourth proportional to 247,393.17, 371,071.08 and 78,906.69 is: 118,354.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,393.17 : 371,071.08 = 78,906.69 : x
  2. Step 2: Convert to fraction form
    247,393.17/371,071.08 = 78,906.69/x
  3. Step 3: Cross multiply
    247,393.17x = 371,071.08 × 78,906.69
  4. Step 4: Simplify right side
    247,393.17x = 29,279,990,677.53
  5. Step 5: Solve for x
    x = 29,279,990,677.53/247,393.17
  6. Step 6: Final answer
    x = 118,354.08

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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.