Home / 392,741.28-541,949.72-220,645.76

Finding the Fourth Proportional to 392,741.28, 541,949.72 and 220,645.76

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Solution

The fourth proportional to 392,741.28, 541,949.72 and 220,645.76 is: 304,472.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,741.28 : 541,949.72 = 220,645.76 : x
  2. Step 2: Convert to fraction form
    392,741.28/541,949.72 = 220,645.76/x
  3. Step 3: Cross multiply
    392,741.28x = 541,949.72 × 220,645.76
  4. Step 4: Simplify right side
    392,741.28x = 119,578,904,038.21
  5. Step 5: Solve for x
    x = 119,578,904,038.21/392,741.28
  6. Step 6: Final answer
    x = 304,472.46

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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.