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Finding the Fourth Proportional to 448,431.39, 672,532.47 and 132,814.49

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Solution

The fourth proportional to 448,431.39, 672,532.47 and 132,814.49 is: 199,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,431.39 : 672,532.47 = 132,814.49 : x
  2. Step 2: Convert to fraction form
    448,431.39/672,532.47 = 132,814.49/x
  3. Step 3: Cross multiply
    448,431.39x = 672,532.47 × 132,814.49
  4. Step 4: Simplify right side
    448,431.39x = 89,322,053,648.83
  5. Step 5: Solve for x
    x = 89,322,053,648.83/448,431.39
  6. Step 6: Final answer
    x = 199,187.78

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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.