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Finding the Fourth Proportional to 228,910.32, 315,880.82 and 126,932.03

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Solution

The fourth proportional to 228,910.32, 315,880.82 and 126,932.03 is: 175,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,910.32 : 315,880.82 = 126,932.03 : x
  2. Step 2: Convert to fraction form
    228,910.32/315,880.82 = 126,932.03/x
  3. Step 3: Cross multiply
    228,910.32x = 315,880.82 × 126,932.03
  4. Step 4: Simplify right side
    228,910.32x = 40,095,393,167.15
  5. Step 5: Solve for x
    x = 40,095,393,167.15/228,910.32
  6. Step 6: Final answer
    x = 175,157.65

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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.