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Finding the Fourth Proportional to 363,080.42, 544,638.39 and 138,398.98

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Solution

The fourth proportional to 363,080.42, 544,638.39 and 138,398.98 is: 207,605.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,080.42 : 544,638.39 = 138,398.98 : x
  2. Step 2: Convert to fraction form
    363,080.42/544,638.39 = 138,398.98/x
  3. Step 3: Cross multiply
    363,080.42x = 544,638.39 × 138,398.98
  4. Step 4: Simplify right side
    363,080.42x = 75,377,397,644.84
  5. Step 5: Solve for x
    x = 75,377,397,644.84/363,080.42
  6. Step 6: Final answer
    x = 207,605.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.