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Finding the Fourth Proportional to 276,239.97, 380,885.08 and 189,067.11

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Solution

The fourth proportional to 276,239.97, 380,885.08 and 189,067.11 is: 260,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,239.97 : 380,885.08 = 189,067.11 : x
  2. Step 2: Convert to fraction form
    276,239.97/380,885.08 = 189,067.11/x
  3. Step 3: Cross multiply
    276,239.97x = 380,885.08 × 189,067.11
  4. Step 4: Simplify right side
    276,239.97x = 72,012,841,629.04
  5. Step 5: Solve for x
    x = 72,012,841,629.04/276,239.97
  6. Step 6: Final answer
    x = 260,689.43

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1.5x scale

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.