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Finding the Fourth Proportional to 276,886.76, 382,105.28 and 156,029.90

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Solution

The fourth proportional to 276,886.76, 382,105.28 and 156,029.90 is: 215,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,886.76 : 382,105.28 = 156,029.90 : x
  2. Step 2: Convert to fraction form
    276,886.76/382,105.28 = 156,029.90/x
  3. Step 3: Cross multiply
    276,886.76x = 382,105.28 × 156,029.90
  4. Step 4: Simplify right side
    276,886.76x = 59,619,847,107.42
  5. Step 5: Solve for x
    x = 59,619,847,107.42/276,886.76
  6. Step 6: Final answer
    x = 215,322.13

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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.