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Finding the Fourth Proportional to 485,247.54, 669,662.22 and 270,387.78

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Solution

The fourth proportional to 485,247.54, 669,662.22 and 270,387.78 is: 373,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,247.54 : 669,662.22 = 270,387.78 : x
  2. Step 2: Convert to fraction form
    485,247.54/669,662.22 = 270,387.78/x
  3. Step 3: Cross multiply
    485,247.54x = 669,662.22 × 270,387.78
  4. Step 4: Simplify right side
    485,247.54x = 181,068,481,015.67
  5. Step 5: Solve for x
    x = 181,068,481,015.67/485,247.54
  6. Step 6: Final answer
    x = 373,146.62

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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.