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Finding the Fourth Proportional to 228,310.83, 315,069.35 and 126,340.61

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Solution

The fourth proportional to 228,310.83, 315,069.35 and 126,340.61 is: 174,350.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,310.83 : 315,069.35 = 126,340.61 : x
  2. Step 2: Convert to fraction form
    228,310.83/315,069.35 = 126,340.61/x
  3. Step 3: Cross multiply
    228,310.83x = 315,069.35 × 126,340.61
  4. Step 4: Simplify right side
    228,310.83x = 39,806,051,664.25
  5. Step 5: Solve for x
    x = 39,806,051,664.25/228,310.83
  6. Step 6: Final answer
    x = 174,350.26

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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.