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Finding the Fourth Proportional to 279,230.90, 418,701.29 and 137,013.93

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Solution

The fourth proportional to 279,230.90, 418,701.29 and 137,013.93 is: 205,449.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,230.90 : 418,701.29 = 137,013.93 : x
  2. Step 2: Convert to fraction form
    279,230.90/418,701.29 = 137,013.93/x
  3. Step 3: Cross multiply
    279,230.90x = 418,701.29 × 137,013.93
  4. Step 4: Simplify right side
    279,230.90x = 57,367,908,553.90
  5. Step 5: Solve for x
    x = 57,367,908,553.90/279,230.90
  6. Step 6: Final answer
    x = 205,449.72

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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.