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Finding the Fourth Proportional to 228,378.33, 315,157.77 and 126,401.76

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Solution

The fourth proportional to 228,378.33, 315,157.77 and 126,401.76 is: 174,432.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,378.33 : 315,157.77 = 126,401.76 : x
  2. Step 2: Convert to fraction form
    228,378.33/315,157.77 = 126,401.76/x
  3. Step 3: Cross multiply
    228,378.33x = 315,157.77 × 126,401.76
  4. Step 4: Simplify right side
    228,378.33x = 39,836,496,805.68
  5. Step 5: Solve for x
    x = 39,836,496,805.68/228,378.33
  6. Step 6: Final answer
    x = 174,432.03

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1.5x scale

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.