Home / 257,979.30-386,839.35-117,579.30

Finding the Fourth Proportional to 257,979.30, 386,839.35 and 117,579.30

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Solution

The fourth proportional to 257,979.30, 386,839.35 and 117,579.30 is: 176,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,979.30 : 386,839.35 = 117,579.30 : x
  2. Step 2: Convert to fraction form
    257,979.30/386,839.35 = 117,579.30/x
  3. Step 3: Cross multiply
    257,979.30x = 386,839.35 × 117,579.30
  4. Step 4: Simplify right side
    257,979.30x = 45,484,299,985.46
  5. Step 5: Solve for x
    x = 45,484,299,985.46/257,979.30
  6. Step 6: Final answer
    x = 176,309.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.