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Finding the Fourth Proportional to 448,072.68, 672,240.24 and 132,538

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Solution

The fourth proportional to 448,072.68, 672,240.24 and 132,538 is: 198,845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,072.68 : 672,240.24 = 132,538 : x
  2. Step 2: Convert to fraction form
    448,072.68/672,240.24 = 132,538/x
  3. Step 3: Cross multiply
    448,072.68x = 672,240.24 × 132,538
  4. Step 4: Simplify right side
    448,072.68x = 89,097,376,929.12
  5. Step 5: Solve for x
    x = 89,097,376,929.12/448,072.68
  6. Step 6: Final answer
    x = 198,845.81

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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.