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Finding the Fourth Proportional to 647,207.20, 970,119.60 and 247,693.60

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Solution

The fourth proportional to 647,207.20, 970,119.60 and 247,693.60 is: 371,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,207.20 : 970,119.60 = 247,693.60 : x
  2. Step 2: Convert to fraction form
    647,207.20/970,119.60 = 247,693.60/x
  3. Step 3: Cross multiply
    647,207.20x = 970,119.60 × 247,693.60
  4. Step 4: Simplify right side
    647,207.20x = 240,292,416,154.56
  5. Step 5: Solve for x
    x = 240,292,416,154.56/647,207.20
  6. Step 6: Final answer
    x = 371,275.87

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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.