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Finding the Fourth Proportional to 228,392.97, 315,157.64 and 126,402.22

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Solution

The fourth proportional to 228,392.97, 315,157.64 and 126,402.22 is: 174,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,392.97 : 315,157.64 = 126,402.22 : x
  2. Step 2: Convert to fraction form
    228,392.97/315,157.64 = 126,402.22/x
  3. Step 3: Cross multiply
    228,392.97x = 315,157.64 × 126,402.22
  4. Step 4: Simplify right side
    228,392.97x = 39,836,625,107.90
  5. Step 5: Solve for x
    x = 39,836,625,107.90/228,392.97
  6. Step 6: Final answer
    x = 174,421.42

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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.