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Finding the Fourth Proportional to 448,104, 671,918.40 and 132,517.20

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Solution

The fourth proportional to 448,104, 671,918.40 and 132,517.20 is: 198,705.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,104 : 671,918.40 = 132,517.20 : x
  2. Step 2: Convert to fraction form
    448,104/671,918.40 = 132,517.20/x
  3. Step 3: Cross multiply
    448,104x = 671,918.40 × 132,517.20
  4. Step 4: Simplify right side
    448,104x = 89,040,744,996.48
  5. Step 5: Solve for x
    x = 89,040,744,996.48/448,104
  6. Step 6: Final answer
    x = 198,705.53

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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.