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Finding the Fourth Proportional to 485,229.59, 727,975.40 and 148,261.00

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Solution

The fourth proportional to 485,229.59, 727,975.40 and 148,261.00 is: 222,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,229.59 : 727,975.40 = 148,261.00 : x
  2. Step 2: Convert to fraction form
    485,229.59/727,975.40 = 148,261.00/x
  3. Step 3: Cross multiply
    485,229.59x = 727,975.40 × 148,261.00
  4. Step 4: Simplify right side
    485,229.59x = 107,930,360,417.08
  5. Step 5: Solve for x
    x = 107,930,360,417.08/485,229.59
  6. Step 6: Final answer
    x = 222,431.53

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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.