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Finding the Fourth Proportional to 279,874.81, 386,227.35 and 159,016.26

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Solution

The fourth proportional to 279,874.81, 386,227.35 and 159,016.26 is: 219,442.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,874.81 : 386,227.35 = 159,016.26 : x
  2. Step 2: Convert to fraction form
    279,874.81/386,227.35 = 159,016.26/x
  3. Step 3: Cross multiply
    279,874.81x = 386,227.35 × 159,016.26
  4. Step 4: Simplify right side
    279,874.81x = 61,416,425,980.49
  5. Step 5: Solve for x
    x = 61,416,425,980.49/279,874.81
  6. Step 6: Final answer
    x = 219,442.49

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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.