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Finding the Fourth Proportional to 485,727.92, 728,150.80 and 170,012.56

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Solution

The fourth proportional to 485,727.92, 728,150.80 and 170,012.56 is: 254,864.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,727.92 : 728,150.80 = 170,012.56 : x
  2. Step 2: Convert to fraction form
    485,727.92/728,150.80 = 170,012.56/x
  3. Step 3: Cross multiply
    485,727.92x = 728,150.80 × 170,012.56
  4. Step 4: Simplify right side
    485,727.92x = 123,794,781,574.05
  5. Step 5: Solve for x
    x = 123,794,781,574.05/485,727.92
  6. Step 6: Final answer
    x = 254,864.45

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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.