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Finding the Fourth Proportional to 436,835.12, 655,251.90 and 137,341.82

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Solution

The fourth proportional to 436,835.12, 655,251.90 and 137,341.82 is: 206,012.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,835.12 : 655,251.90 = 137,341.82 : x
  2. Step 2: Convert to fraction form
    436,835.12/655,251.90 = 137,341.82/x
  3. Step 3: Cross multiply
    436,835.12x = 655,251.90 × 137,341.82
  4. Step 4: Simplify right side
    436,835.12x = 89,993,488,504.46
  5. Step 5: Solve for x
    x = 89,993,488,504.46/436,835.12
  6. Step 6: Final answer
    x = 206,012.48

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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.