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Finding the Fourth Proportional to 276,453.92, 381,543 and 155,618.66

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Solution

The fourth proportional to 276,453.92, 381,543 and 155,618.66 is: 214,774.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,453.92 : 381,543 = 155,618.66 : x
  2. Step 2: Convert to fraction form
    276,453.92/381,543 = 155,618.66/x
  3. Step 3: Cross multiply
    276,453.92x = 381,543 × 155,618.66
  4. Step 4: Simplify right side
    276,453.92x = 59,375,210,392.38
  5. Step 5: Solve for x
    x = 59,375,210,392.38/276,453.92
  6. Step 6: Final answer
    x = 214,774.35

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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.