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Finding the Fourth Proportional to 448,658.30, 672,756.60 and 133,074.20

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Solution

The fourth proportional to 448,658.30, 672,756.60 and 133,074.20 is: 199,542.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,658.30 : 672,756.60 = 133,074.20 : x
  2. Step 2: Convert to fraction form
    448,658.30/672,756.60 = 133,074.20/x
  3. Step 3: Cross multiply
    448,658.30x = 672,756.60 × 133,074.20
  4. Step 4: Simplify right side
    448,658.30x = 89,526,546,339.72
  5. Step 5: Solve for x
    x = 89,526,546,339.72/448,658.30
  6. Step 6: Final answer
    x = 199,542.83

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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.