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Finding the Fourth Proportional to 228,609.27, 315,469.40 and 125,243.87

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Solution

The fourth proportional to 228,609.27, 315,469.40 and 125,243.87 is: 172,830.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,609.27 : 315,469.40 = 125,243.87 : x
  2. Step 2: Convert to fraction form
    228,609.27/315,469.40 = 125,243.87/x
  3. Step 3: Cross multiply
    228,609.27x = 315,469.40 × 125,243.87
  4. Step 4: Simplify right side
    228,609.27x = 39,510,606,319.01
  5. Step 5: Solve for x
    x = 39,510,606,319.01/228,609.27
  6. Step 6: Final answer
    x = 172,830.29

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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.