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Finding the Fourth Proportional to 485,172.32, 669,542.38 and 267,388.96

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Solution

The fourth proportional to 485,172.32, 669,542.38 and 267,388.96 is: 368,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,172.32 : 669,542.38 = 267,388.96 : x
  2. Step 2: Convert to fraction form
    485,172.32/669,542.38 = 267,388.96/x
  3. Step 3: Cross multiply
    485,172.32x = 669,542.38 × 267,388.96
  4. Step 4: Simplify right side
    485,172.32x = 179,028,240,664.13
  5. Step 5: Solve for x
    x = 179,028,240,664.13/485,172.32
  6. Step 6: Final answer
    x = 368,999.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.