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Finding the Fourth Proportional to 485,154.60, 727,472.70 and 169,621.80

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Solution

The fourth proportional to 485,154.60, 727,472.70 and 169,621.80 is: 254,342.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,154.60 : 727,472.70 = 169,621.80 : x
  2. Step 2: Convert to fraction form
    485,154.60/727,472.70 = 169,621.80/x
  3. Step 3: Cross multiply
    485,154.60x = 727,472.70 × 169,621.80
  4. Step 4: Simplify right side
    485,154.60x = 123,395,228,824.86
  5. Step 5: Solve for x
    x = 123,395,228,824.86/485,154.60
  6. Step 6: Final answer
    x = 254,342.08

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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.