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Finding the Fourth Proportional to 279,119.30, 418,510.39 and 125,217.11

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Solution

The fourth proportional to 279,119.30, 418,510.39 and 125,217.11 is: 187,750.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,119.30 : 418,510.39 = 125,217.11 : x
  2. Step 2: Convert to fraction form
    279,119.30/418,510.39 = 125,217.11/x
  3. Step 3: Cross multiply
    279,119.30x = 418,510.39 × 125,217.11
  4. Step 4: Simplify right side
    279,119.30x = 52,404,662,274.01
  5. Step 5: Solve for x
    x = 52,404,662,274.01/279,119.30
  6. Step 6: Final answer
    x = 187,750.05

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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.