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Finding the Fourth Proportional to 325,753.40, 488,630.10 and 279,097.40

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Solution

The fourth proportional to 325,753.40, 488,630.10 and 279,097.40 is: 418,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,753.40 : 488,630.10 = 279,097.40 : x
  2. Step 2: Convert to fraction form
    325,753.40/488,630.10 = 279,097.40/x
  3. Step 3: Cross multiply
    325,753.40x = 488,630.10 × 279,097.40
  4. Step 4: Simplify right side
    325,753.40x = 136,375,390,471.74
  5. Step 5: Solve for x
    x = 136,375,390,471.74/325,753.40
  6. Step 6: Final answer
    x = 418,646.10

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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.