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Finding the Fourth Proportional to 392,359.88, 541,419.23 and 220,238.43

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Solution

The fourth proportional to 392,359.88, 541,419.23 and 220,238.43 is: 303,908.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,359.88 : 541,419.23 = 220,238.43 : x
  2. Step 2: Convert to fraction form
    392,359.88/541,419.23 = 220,238.43/x
  3. Step 3: Cross multiply
    392,359.88x = 541,419.23 × 220,238.43
  4. Step 4: Simplify right side
    392,359.88x = 119,241,317,378.72
  5. Step 5: Solve for x
    x = 119,241,317,378.72/392,359.88
  6. Step 6: Final answer
    x = 303,908.03

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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.