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Finding the Fourth Proportional to 485,881.56, 728,822.16 and 249,073.20

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Solution

The fourth proportional to 485,881.56, 728,822.16 and 249,073.20 is: 373,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,881.56 : 728,822.16 = 249,073.20 : x
  2. Step 2: Convert to fraction form
    485,881.56/728,822.16 = 249,073.20/x
  3. Step 3: Cross multiply
    485,881.56x = 728,822.16 × 249,073.20
  4. Step 4: Simplify right side
    485,881.56x = 181,530,067,622.11
  5. Step 5: Solve for x
    x = 181,530,067,622.11/485,881.56
  6. Step 6: Final answer
    x = 373,609.71

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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.