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Finding the Fourth Proportional to 485,392.14, 728,416.26 and 169,851.78

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Solution

The fourth proportional to 485,392.14, 728,416.26 and 169,851.78 is: 254,892.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,392.14 : 728,416.26 = 169,851.78 : x
  2. Step 2: Convert to fraction form
    485,392.14/728,416.26 = 169,851.78/x
  3. Step 3: Cross multiply
    485,392.14x = 728,416.26 × 169,851.78
  4. Step 4: Simplify right side
    485,392.14x = 123,722,798,341.94
  5. Step 5: Solve for x
    x = 123,722,798,341.94/485,392.14
  6. Step 6: Final answer
    x = 254,892.46

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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.