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Finding the Fourth Proportional to 485,673.87, 728,614.50 and 170,149.71

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Solution

The fourth proportional to 485,673.87, 728,614.50 and 170,149.71 is: 255,260.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,673.87 : 728,614.50 = 170,149.71 : x
  2. Step 2: Convert to fraction form
    485,673.87/728,614.50 = 170,149.71/x
  3. Step 3: Cross multiply
    485,673.87x = 728,614.50 × 170,149.71
  4. Step 4: Simplify right side
    485,673.87x = 123,973,545,876.80
  5. Step 5: Solve for x
    x = 123,973,545,876.80/485,673.87
  6. Step 6: Final answer
    x = 255,260.89

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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.