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Finding the Fourth Proportional to 279,959.76, 386,327.81 and 159,084.27

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Solution

The fourth proportional to 279,959.76, 386,327.81 and 159,084.27 is: 219,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,959.76 : 386,327.81 = 159,084.27 : x
  2. Step 2: Convert to fraction form
    279,959.76/386,327.81 = 159,084.27/x
  3. Step 3: Cross multiply
    279,959.76x = 386,327.81 × 159,084.27
  4. Step 4: Simplify right side
    279,959.76x = 61,458,678,032.26
  5. Step 5: Solve for x
    x = 61,458,678,032.26/279,959.76
  6. Step 6: Final answer
    x = 219,526.83

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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.