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Finding the Fourth Proportional to 392,752.76, 542,002.44 and 222,990.52

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Solution

The fourth proportional to 392,752.76, 542,002.44 and 222,990.52 is: 307,728.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,752.76 : 542,002.44 = 222,990.52 : x
  2. Step 2: Convert to fraction form
    392,752.76/542,002.44 = 222,990.52/x
  3. Step 3: Cross multiply
    392,752.76x = 542,002.44 × 222,990.52
  4. Step 4: Simplify right side
    392,752.76x = 120,861,405,936.87
  5. Step 5: Solve for x
    x = 120,861,405,936.87/392,752.76
  6. Step 6: Final answer
    x = 307,728.98

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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.