Home / 485,378,177.80-728,067,266.70-178,890,248.20

Finding the Fourth Proportional to 485,378,177.80, 728,067,266.70 and 178,890,248.20

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Solution

The fourth proportional to 485,378,177.80, 728,067,266.70 and 178,890,248.20 is: 268,335,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,378,177.80 : 728,067,266.70 = 178,890,248.20 : x
  2. Step 2: Convert to fraction form
    485,378,177.80/728,067,266.70 = 178,890,248.20/x
  3. Step 3: Cross multiply
    485,378,177.80x = 728,067,266.70 × 178,890,248.20
  4. Step 4: Simplify right side
    485,378,177.80x = 130,244,134,046,258,592
  5. Step 5: Solve for x
    x = 130,244,134,046,258,592/485,378,177.80
  6. Step 6: Final answer
    x = 268,335,372.30

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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.