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Finding the Fourth Proportional to 485,229.66, 727,955.28 and 148,318.26

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Solution

The fourth proportional to 485,229.66, 727,955.28 and 148,318.26 is: 222,511.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,229.66 : 727,955.28 = 148,318.26 : x
  2. Step 2: Convert to fraction form
    485,229.66/727,955.28 = 148,318.26/x
  3. Step 3: Cross multiply
    485,229.66x = 727,955.28 × 148,318.26
  4. Step 4: Simplify right side
    485,229.66x = 107,969,060,487.41
  5. Step 5: Solve for x
    x = 107,969,060,487.41/485,229.66
  6. Step 6: Final answer
    x = 222,511.25

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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.