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Finding the Fourth Proportional to 276,575.44, 381,657.78 and 155,711.86

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Solution

The fourth proportional to 276,575.44, 381,657.78 and 155,711.86 is: 214,873.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,575.44 : 381,657.78 = 155,711.86 : x
  2. Step 2: Convert to fraction form
    276,575.44/381,657.78 = 155,711.86/x
  3. Step 3: Cross multiply
    276,575.44x = 381,657.78 × 155,711.86
  4. Step 4: Simplify right side
    276,575.44x = 59,428,642,807.27
  5. Step 5: Solve for x
    x = 59,428,642,807.27/276,575.44
  6. Step 6: Final answer
    x = 214,873.17

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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.