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Finding the Fourth Proportional to 454,131.38, 679,978.84 and 253,881.44

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Solution

The fourth proportional to 454,131.38, 679,978.84 and 253,881.44 is: 380,141.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,131.38 : 679,978.84 = 253,881.44 : x
  2. Step 2: Convert to fraction form
    454,131.38/679,978.84 = 253,881.44/x
  3. Step 3: Cross multiply
    454,131.38x = 679,978.84 × 253,881.44
  4. Step 4: Simplify right side
    454,131.38x = 172,634,007,068.73
  5. Step 5: Solve for x
    x = 172,634,007,068.73/454,131.38
  6. Step 6: Final answer
    x = 380,141.11

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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.