Home / 392,974.12-542,306.10-223,217.56

Finding the Fourth Proportional to 392,974.12, 542,306.10 and 223,217.56

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Solution

The fourth proportional to 392,974.12, 542,306.10 and 223,217.56 is: 308,041.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,974.12 : 542,306.10 = 223,217.56 : x
  2. Step 2: Convert to fraction form
    392,974.12/542,306.10 = 223,217.56/x
  3. Step 3: Cross multiply
    392,974.12x = 542,306.10 × 223,217.56
  4. Step 4: Simplify right side
    392,974.12x = 121,052,244,415.12
  5. Step 5: Solve for x
    x = 121,052,244,415.12/392,974.12
  6. Step 6: Final answer
    x = 308,041.26

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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.