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Finding the Fourth Proportional to 276,730.88, 415,090.56 and 187,761.92

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Solution

The fourth proportional to 276,730.88, 415,090.56 and 187,761.92 is: 281,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,730.88 : 415,090.56 = 187,761.92 : x
  2. Step 2: Convert to fraction form
    276,730.88/415,090.56 = 187,761.92/x
  3. Step 3: Cross multiply
    276,730.88x = 415,090.56 × 187,761.92
  4. Step 4: Simplify right side
    276,730.88x = 77,938,200,519.48
  5. Step 5: Solve for x
    x = 77,938,200,519.48/276,730.88
  6. Step 6: Final answer
    x = 281,638.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.