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Finding the Fourth Proportional to 402,418.17, 603,252.05 and 135,992.37

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Solution

The fourth proportional to 402,418.17, 603,252.05 and 135,992.37 is: 203,861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,418.17 : 603,252.05 = 135,992.37 : x
  2. Step 2: Convert to fraction form
    402,418.17/603,252.05 = 135,992.37/x
  3. Step 3: Cross multiply
    402,418.17x = 603,252.05 × 135,992.37
  4. Step 4: Simplify right side
    402,418.17x = 82,037,675,306.90
  5. Step 5: Solve for x
    x = 82,037,675,306.90/402,418.17
  6. Step 6: Final answer
    x = 203,861.76

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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.