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Finding the Fourth Proportional to 451,090.88, 676,988.40 and 198,546.56

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Solution

The fourth proportional to 451,090.88, 676,988.40 and 198,546.56 is: 297,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,090.88 : 676,988.40 = 198,546.56 : x
  2. Step 2: Convert to fraction form
    451,090.88/676,988.40 = 198,546.56/x
  3. Step 3: Cross multiply
    451,090.88x = 676,988.40 × 198,546.56
  4. Step 4: Simplify right side
    451,090.88x = 134,413,717,979.90
  5. Step 5: Solve for x
    x = 134,413,717,979.90/451,090.88
  6. Step 6: Final answer
    x = 297,974.81

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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.