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Finding the Fourth Proportional to 485,078.40, 727,444.80 and 169,545.60

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Solution

The fourth proportional to 485,078.40, 727,444.80 and 169,545.60 is: 254,258.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,078.40 : 727,444.80 = 169,545.60 : x
  2. Step 2: Convert to fraction form
    485,078.40/727,444.80 = 169,545.60/x
  3. Step 3: Cross multiply
    485,078.40x = 727,444.80 × 169,545.60
  4. Step 4: Simplify right side
    485,078.40x = 123,335,065,082.88
  5. Step 5: Solve for x
    x = 123,335,065,082.88/485,078.40
  6. Step 6: Final answer
    x = 254,258.00

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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.