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Finding the Fourth Proportional to 228,761.10, 343,184.88 and 86,648.94

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Solution

The fourth proportional to 228,761.10, 343,184.88 and 86,648.94 is: 129,989.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,761.10 : 343,184.88 = 86,648.94 : x
  2. Step 2: Convert to fraction form
    228,761.10/343,184.88 = 86,648.94/x
  3. Step 3: Cross multiply
    228,761.10x = 343,184.88 × 86,648.94
  4. Step 4: Simplify right side
    228,761.10x = 29,736,606,076.03
  5. Step 5: Solve for x
    x = 29,736,606,076.03/228,761.10
  6. Step 6: Final answer
    x = 129,989.78

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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.