Home / 392,942.28-542,306.44-220,860.48

Finding the Fourth Proportional to 392,942.28, 542,306.44 and 220,860.48

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Solution

The fourth proportional to 392,942.28, 542,306.44 and 220,860.48 is: 304,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,942.28 : 542,306.44 = 220,860.48 : x
  2. Step 2: Convert to fraction form
    392,942.28/542,306.44 = 220,860.48/x
  3. Step 3: Cross multiply
    392,942.28x = 542,306.44 × 220,860.48
  4. Step 4: Simplify right side
    392,942.28x = 119,774,060,645.49
  5. Step 5: Solve for x
    x = 119,774,060,645.49/392,942.28
  6. Step 6: Final answer
    x = 304,813.37

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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.