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Finding the Fourth Proportional to 247,404.60, 371,106.90 and 81,192.60

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Solution

The fourth proportional to 247,404.60, 371,106.90 and 81,192.60 is: 121,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,404.60 : 371,106.90 = 81,192.60 : x
  2. Step 2: Convert to fraction form
    247,404.60/371,106.90 = 81,192.60/x
  3. Step 3: Cross multiply
    247,404.60x = 371,106.90 × 81,192.60
  4. Step 4: Simplify right side
    247,404.60x = 30,131,134,088.94
  5. Step 5: Solve for x
    x = 30,131,134,088.94/247,404.60
  6. Step 6: Final answer
    x = 121,788.90

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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.