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Finding the Fourth Proportional to 228,740.52, 315,657.38 and 126,763.86

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Solution

The fourth proportional to 228,740.52, 315,657.38 and 126,763.86 is: 174,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,740.52 : 315,657.38 = 126,763.86 : x
  2. Step 2: Convert to fraction form
    228,740.52/315,657.38 = 126,763.86/x
  3. Step 3: Cross multiply
    228,740.52x = 315,657.38 × 126,763.86
  4. Step 4: Simplify right side
    228,740.52x = 40,013,948,476.18
  5. Step 5: Solve for x
    x = 40,013,948,476.18/228,740.52
  6. Step 6: Final answer
    x = 174,931.61

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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.