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Finding the Fourth Proportional to 436,209.96, 654,315.20 and 136,713.88

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Solution

The fourth proportional to 436,209.96, 654,315.20 and 136,713.88 is: 205,070.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,209.96 : 654,315.20 = 136,713.88 : x
  2. Step 2: Convert to fraction form
    436,209.96/654,315.20 = 136,713.88/x
  3. Step 3: Cross multiply
    436,209.96x = 654,315.20 × 136,713.88
  4. Step 4: Simplify right side
    436,209.96x = 89,453,969,734.98
  5. Step 5: Solve for x
    x = 89,453,969,734.98/436,209.96
  6. Step 6: Final answer
    x = 205,070.90

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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.