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Finding the Fourth Proportional to 485,295.88, 728,462.22 and 275,343.88

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Solution

The fourth proportional to 485,295.88, 728,462.22 and 275,343.88 is: 413,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,295.88 : 728,462.22 = 275,343.88 : x
  2. Step 2: Convert to fraction form
    485,295.88/728,462.22 = 275,343.88/x
  3. Step 3: Cross multiply
    485,295.88x = 728,462.22 × 275,343.88
  4. Step 4: Simplify right side
    485,295.88x = 200,577,614,088.21
  5. Step 5: Solve for x
    x = 200,577,614,088.21/485,295.88
  6. Step 6: Final answer
    x = 413,309.95

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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.