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Finding the Fourth Proportional to 392,359.38, 541,418.54 and 220,237.93

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Solution

The fourth proportional to 392,359.38, 541,418.54 and 220,237.93 is: 303,907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,359.38 : 541,418.54 = 220,237.93 : x
  2. Step 2: Convert to fraction form
    392,359.38/541,418.54 = 220,237.93/x
  3. Step 3: Cross multiply
    392,359.38x = 541,418.54 × 220,237.93
  4. Step 4: Simplify right side
    392,359.38x = 119,240,894,704.94
  5. Step 5: Solve for x
    x = 119,240,894,704.94/392,359.38
  6. Step 6: Final answer
    x = 303,907.34

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1.5x scale

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.