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Finding the Fourth Proportional to 392,158.88, 541,055.90 and 220,051.55

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Solution

The fourth proportional to 392,158.88, 541,055.90 and 220,051.55 is: 303,601.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,158.88 : 541,055.90 = 220,051.55 : x
  2. Step 2: Convert to fraction form
    392,158.88/541,055.90 = 220,051.55/x
  3. Step 3: Cross multiply
    392,158.88x = 541,055.90 × 220,051.55
  4. Step 4: Simplify right side
    392,158.88x = 119,060,191,334.41
  5. Step 5: Solve for x
    x = 119,060,191,334.41/392,158.88
  6. Step 6: Final answer
    x = 303,601.92

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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.