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Finding the Fourth Proportional to 228,353.91, 315,123.87 and 126,373.44

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Solution

The fourth proportional to 228,353.91, 315,123.87 and 126,373.44 is: 174,392.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,353.91 : 315,123.87 = 126,373.44 : x
  2. Step 2: Convert to fraction form
    228,353.91/315,123.87 = 126,373.44/x
  3. Step 3: Cross multiply
    228,353.91x = 315,123.87 × 126,373.44
  4. Step 4: Simplify right side
    228,353.91x = 39,823,287,478.01
  5. Step 5: Solve for x
    x = 39,823,287,478.01/228,353.91
  6. Step 6: Final answer
    x = 174,392.84

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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.