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Finding the Fourth Proportional to 485,833.31, 728,723.70 and 148,874.94

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Solution

The fourth proportional to 485,833.31, 728,723.70 and 148,874.94 is: 223,304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,833.31 : 728,723.70 = 148,874.94 : x
  2. Step 2: Convert to fraction form
    485,833.31/728,723.70 = 148,874.94/x
  3. Step 3: Cross multiply
    485,833.31x = 728,723.70 × 148,874.94
  4. Step 4: Simplify right side
    485,833.31x = 108,488,697,114.08
  5. Step 5: Solve for x
    x = 108,488,697,114.08/485,833.31
  6. Step 6: Final answer
    x = 223,304.36

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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.