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Finding the Fourth Proportional to 279,883.98, 386,250.30 and 159,045.75

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Solution

The fourth proportional to 279,883.98, 386,250.30 and 159,045.75 is: 219,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,883.98 : 386,250.30 = 159,045.75 : x
  2. Step 2: Convert to fraction form
    279,883.98/386,250.30 = 159,045.75/x
  3. Step 3: Cross multiply
    279,883.98x = 386,250.30 × 159,045.75
  4. Step 4: Simplify right side
    279,883.98x = 61,431,468,651.23
  5. Step 5: Solve for x
    x = 61,431,468,651.23/279,883.98
  6. Step 6: Final answer
    x = 219,489.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.