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Finding the Fourth Proportional to 228,625.61, 315,503.28 and 126,657.69

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Solution

The fourth proportional to 228,625.61, 315,503.28 and 126,657.69 is: 174,787.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,625.61 : 315,503.28 = 126,657.69 : x
  2. Step 2: Convert to fraction form
    228,625.61/315,503.28 = 126,657.69/x
  3. Step 3: Cross multiply
    228,625.61x = 315,503.28 × 126,657.69
  4. Step 4: Simplify right side
    228,625.61x = 39,960,915,449.09
  5. Step 5: Solve for x
    x = 39,960,915,449.09/228,625.61
  6. Step 6: Final answer
    x = 174,787.58

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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.