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Finding the Fourth Proportional to 247,246.20, 370,847.70 and 81,034.20

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Solution

The fourth proportional to 247,246.20, 370,847.70 and 81,034.20 is: 121,544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,246.20 : 370,847.70 = 81,034.20 : x
  2. Step 2: Convert to fraction form
    247,246.20/370,847.70 = 81,034.20/x
  3. Step 3: Cross multiply
    247,246.20x = 370,847.70 × 81,034.20
  4. Step 4: Simplify right side
    247,246.20x = 30,051,346,691.34
  5. Step 5: Solve for x
    x = 30,051,346,691.34/247,246.20
  6. Step 6: Final answer
    x = 121,544.22

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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.