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Finding the Fourth Proportional to 436,211.94, 654,318.18 and 136,715.88

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Solution

The fourth proportional to 436,211.94, 654,318.18 and 136,715.88 is: 205,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,211.94 : 654,318.18 = 136,715.88 : x
  2. Step 2: Convert to fraction form
    436,211.94/654,318.18 = 136,715.88/x
  3. Step 3: Cross multiply
    436,211.94x = 654,318.18 × 136,715.88
  4. Step 4: Simplify right side
    436,211.94x = 89,455,685,778.70
  5. Step 5: Solve for x
    x = 89,455,685,778.70/436,211.94
  6. Step 6: Final answer
    x = 205,073.90

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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.