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Finding the Fourth Proportional to 228,478.95, 315,310.81 and 126,504.41

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Solution

The fourth proportional to 228,478.95, 315,310.81 and 126,504.41 is: 174,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,478.95 : 315,310.81 = 126,504.41 : x
  2. Step 2: Convert to fraction form
    228,478.95/315,310.81 = 126,504.41/x
  3. Step 3: Cross multiply
    228,478.95x = 315,310.81 × 126,504.41
  4. Step 4: Simplify right side
    228,478.95x = 39,888,207,985.67
  5. Step 5: Solve for x
    x = 39,888,207,985.67/228,478.95
  6. Step 6: Final answer
    x = 174,581.54

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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.