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Finding the Fourth Proportional to 228,840.39, 315,770.49 and 126,864.90

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Solution

The fourth proportional to 228,840.39, 315,770.49 and 126,864.90 is: 175,057.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,840.39 : 315,770.49 = 126,864.90 : x
  2. Step 2: Convert to fraction form
    228,840.39/315,770.49 = 126,864.90/x
  3. Step 3: Cross multiply
    228,840.39x = 315,770.49 × 126,864.90
  4. Step 4: Simplify right side
    228,840.39x = 40,060,191,636.80
  5. Step 5: Solve for x
    x = 40,060,191,636.80/228,840.39
  6. Step 6: Final answer
    x = 175,057.35

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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.