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Finding the Fourth Proportional to 247,310.90, 370,977.15 and 81,098.90

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Solution

The fourth proportional to 247,310.90, 370,977.15 and 81,098.90 is: 121,651.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,310.90 : 370,977.15 = 81,098.90 : x
  2. Step 2: Convert to fraction form
    247,310.90/370,977.15 = 81,098.90/x
  3. Step 3: Cross multiply
    247,310.90x = 370,977.15 × 81,098.90
  4. Step 4: Simplify right side
    247,310.90x = 30,085,838,790.14
  5. Step 5: Solve for x
    x = 30,085,838,790.14/247,310.90
  6. Step 6: Final answer
    x = 121,651.89

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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.