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Finding the Fourth Proportional to 436,806.88, 655,178.73 and 137,373.11

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Solution

The fourth proportional to 436,806.88, 655,178.73 and 137,373.11 is: 206,049.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,806.88 : 655,178.73 = 137,373.11 : x
  2. Step 2: Convert to fraction form
    436,806.88/655,178.73 = 137,373.11/x
  3. Step 3: Cross multiply
    436,806.88x = 655,178.73 × 137,373.11
  4. Step 4: Simplify right side
    436,806.88x = 90,003,942,097.21
  5. Step 5: Solve for x
    x = 90,003,942,097.21/436,806.88
  6. Step 6: Final answer
    x = 206,049.74

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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.