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Finding the Fourth Proportional to 228,409.05, 315,205.21 and 123,632.97

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Solution

The fourth proportional to 228,409.05, 315,205.21 and 123,632.97 is: 170,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409.05 : 315,205.21 = 123,632.97 : x
  2. Step 2: Convert to fraction form
    228,409.05/315,205.21 = 123,632.97/x
  3. Step 3: Cross multiply
    228,409.05x = 315,205.21 × 123,632.97
  4. Step 4: Simplify right side
    228,409.05x = 38,969,754,548.86
  5. Step 5: Solve for x
    x = 38,969,754,548.86/228,409.05
  6. Step 6: Final answer
    x = 170,613.88

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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.