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Finding the Fourth Proportional to 392,374.02, 541,438.71 and 220,252.56

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Solution

The fourth proportional to 392,374.02, 541,438.71 and 220,252.56 is: 303,927.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,374.02 : 541,438.71 = 220,252.56 : x
  2. Step 2: Convert to fraction form
    392,374.02/541,438.71 = 220,252.56/x
  3. Step 3: Cross multiply
    392,374.02x = 541,438.71 × 220,252.56
  4. Step 4: Simplify right side
    392,374.02x = 119,253,261,960.60
  5. Step 5: Solve for x
    x = 119,253,261,960.60/392,374.02
  6. Step 6: Final answer
    x = 303,927.52

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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.