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Finding the Fourth Proportional to 276,531.03, 381,649.19 and 155,695.86

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Solution

The fourth proportional to 276,531.03, 381,649.19 and 155,695.86 is: 214,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,531.03 : 381,649.19 = 155,695.86 : x
  2. Step 2: Convert to fraction form
    276,531.03/381,649.19 = 155,695.86/x
  3. Step 3: Cross multiply
    276,531.03x = 381,649.19 × 155,695.86
  4. Step 4: Simplify right side
    276,531.03x = 59,421,198,660.73
  5. Step 5: Solve for x
    x = 59,421,198,660.73/276,531.03
  6. Step 6: Final answer
    x = 214,880.77

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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.