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Finding the Fourth Proportional to 228,881.19, 315,859.84 and 126,910.95

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Solution

The fourth proportional to 228,881.19, 315,859.84 and 126,910.95 is: 175,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,881.19 : 315,859.84 = 126,910.95 : x
  2. Step 2: Convert to fraction form
    228,881.19/315,859.84 = 126,910.95/x
  3. Step 3: Cross multiply
    228,881.19x = 315,859.84 × 126,910.95
  4. Step 4: Simplify right side
    228,881.19x = 40,086,070,147.39
  5. Step 5: Solve for x
    x = 40,086,070,147.39/228,881.19
  6. Step 6: Final answer
    x = 175,139.21

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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.