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Finding the Fourth Proportional to 399,060.32, 550,706.46 and 217,773.68

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Solution

The fourth proportional to 399,060.32, 550,706.46 and 217,773.68 is: 300,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,060.32 : 550,706.46 = 217,773.68 : x
  2. Step 2: Convert to fraction form
    399,060.32/550,706.46 = 217,773.68/x
  3. Step 3: Cross multiply
    399,060.32x = 550,706.46 × 217,773.68
  4. Step 4: Simplify right side
    399,060.32x = 119,929,372,393.97
  5. Step 5: Solve for x
    x = 119,929,372,393.97/399,060.32
  6. Step 6: Final answer
    x = 300,529.43

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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.