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Finding the Fourth Proportional to 276,164.92, 381,103.96 and 155,306.17

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Solution

The fourth proportional to 276,164.92, 381,103.96 and 155,306.17 is: 214,320.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,164.92 : 381,103.96 = 155,306.17 : x
  2. Step 2: Convert to fraction form
    276,164.92/381,103.96 = 155,306.17/x
  3. Step 3: Cross multiply
    276,164.92x = 381,103.96 × 155,306.17
  4. Step 4: Simplify right side
    276,164.92x = 59,187,796,399.43
  5. Step 5: Solve for x
    x = 59,187,796,399.43/276,164.92
  6. Step 6: Final answer
    x = 214,320.47

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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.