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Finding the Fourth Proportional to 279,873.31, 386,225.28 and 159,014.75

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Solution

The fourth proportional to 279,873.31, 386,225.28 and 159,014.75 is: 219,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,873.31 : 386,225.28 = 159,014.75 : x
  2. Step 2: Convert to fraction form
    279,873.31/386,225.28 = 159,014.75/x
  3. Step 3: Cross multiply
    279,873.31x = 386,225.28 × 159,014.75
  4. Step 4: Simplify right side
    279,873.31x = 61,415,516,513.37
  5. Step 5: Solve for x
    x = 61,415,516,513.37/279,873.31
  6. Step 6: Final answer
    x = 219,440.42

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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.