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Finding the Fourth Proportional to 485,412.92, 728,447.40 and 169,872.56

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Solution

The fourth proportional to 485,412.92, 728,447.40 and 169,872.56 is: 254,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,412.92 : 728,447.40 = 169,872.56 : x
  2. Step 2: Convert to fraction form
    485,412.92/728,447.40 = 169,872.56/x
  3. Step 3: Cross multiply
    485,412.92x = 728,447.40 × 169,872.56
  4. Step 4: Simplify right side
    485,412.92x = 123,743,224,663.34
  5. Step 5: Solve for x
    x = 123,743,224,663.34/485,412.92
  6. Step 6: Final answer
    x = 254,923.63

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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.