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Finding the Fourth Proportional to 488,621.72, 732,922.20 and 133,635.74

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Solution

The fourth proportional to 488,621.72, 732,922.20 and 133,635.74 is: 200,450.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,621.72 : 732,922.20 = 133,635.74 : x
  2. Step 2: Convert to fraction form
    488,621.72/732,922.20 = 133,635.74/x
  3. Step 3: Cross multiply
    488,621.72x = 732,922.20 × 133,635.74
  4. Step 4: Simplify right side
    488,621.72x = 97,944,600,559.43
  5. Step 5: Solve for x
    x = 97,944,600,559.43/488,621.72
  6. Step 6: Final answer
    x = 200,450.77

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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.