Home / 279,876.11-386,239.43-159,037.88

Finding the Fourth Proportional to 279,876.11, 386,239.43 and 159,037.88

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Solution

The fourth proportional to 279,876.11, 386,239.43 and 159,037.88 is: 219,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,876.11 : 386,239.43 = 159,037.88 : x
  2. Step 2: Convert to fraction form
    279,876.11/386,239.43 = 159,037.88/x
  3. Step 3: Cross multiply
    279,876.11x = 386,239.43 × 159,037.88
  4. Step 4: Simplify right side
    279,876.11x = 61,426,698,586.01
  5. Step 5: Solve for x
    x = 61,426,698,586.01/279,876.11
  6. Step 6: Final answer
    x = 219,478.18

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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.