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Finding the Fourth Proportional to 485,364.38, 728,374.79 and 169,824.02

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Solution

The fourth proportional to 485,364.38, 728,374.79 and 169,824.02 is: 254,850.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,364.38 : 728,374.79 = 169,824.02 : x
  2. Step 2: Convert to fraction form
    485,364.38/728,374.79 = 169,824.02/x
  3. Step 3: Cross multiply
    485,364.38x = 728,374.79 × 169,824.02
  4. Step 4: Simplify right side
    485,364.38x = 123,695,534,904.46
  5. Step 5: Solve for x
    x = 123,695,534,904.46/485,364.38
  6. Step 6: Final answer
    x = 254,850.87

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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.