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Finding the Fourth Proportional to 228,476.57, 315,287.37 and 126,494.87

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Solution

The fourth proportional to 228,476.57, 315,287.37 and 126,494.87 is: 174,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,476.57 : 315,287.37 = 126,494.87 : x
  2. Step 2: Convert to fraction form
    228,476.57/315,287.37 = 126,494.87/x
  3. Step 3: Cross multiply
    228,476.57x = 315,287.37 × 126,494.87
  4. Step 4: Simplify right side
    228,476.57x = 39,882,233,304.36
  5. Step 5: Solve for x
    x = 39,882,233,304.36/228,476.57
  6. Step 6: Final answer
    x = 174,557.22

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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.