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Finding the Fourth Proportional to 392,775.75, 542,034.18 and 223,013.52

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Solution

The fourth proportional to 392,775.75, 542,034.18 and 223,013.52 is: 307,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,775.75 : 542,034.18 = 223,013.52 : x
  2. Step 2: Convert to fraction form
    392,775.75/542,034.18 = 223,013.52/x
  3. Step 3: Cross multiply
    392,775.75x = 542,034.18 × 223,013.52
  4. Step 4: Simplify right side
    392,775.75x = 120,880,950,442.11
  5. Step 5: Solve for x
    x = 120,880,950,442.11/392,775.75
  6. Step 6: Final answer
    x = 307,760.73

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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.