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Finding the Fourth Proportional to 363,079.42, 544,636.89 and 138,397.98

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Solution

The fourth proportional to 363,079.42, 544,636.89 and 138,397.98 is: 207,603.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,079.42 : 544,636.89 = 138,397.98 : x
  2. Step 2: Convert to fraction form
    363,079.42/544,636.89 = 138,397.98/x
  3. Step 3: Cross multiply
    363,079.42x = 544,636.89 × 138,397.98
  4. Step 4: Simplify right side
    363,079.42x = 75,376,645,409.48
  5. Step 5: Solve for x
    x = 75,376,645,409.48/363,079.42
  6. Step 6: Final answer
    x = 207,603.74

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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.