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Finding the Fourth Proportional to 228,951.61, 315,954.15 and 126,986.59

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Solution

The fourth proportional to 228,951.61, 315,954.15 and 126,986.59 is: 175,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,951.61 : 315,954.15 = 126,986.59 : x
  2. Step 2: Convert to fraction form
    228,951.61/315,954.15 = 126,986.59/x
  3. Step 3: Cross multiply
    228,951.61x = 315,954.15 × 126,986.59
  4. Step 4: Simplify right side
    228,951.61x = 40,121,940,104.85
  5. Step 5: Solve for x
    x = 40,121,940,104.85/228,951.61
  6. Step 6: Final answer
    x = 175,242.01

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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.