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Finding the Fourth Proportional to 228,351.35, 315,118.37 and 126,381.08

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Solution

The fourth proportional to 228,351.35, 315,118.37 and 126,381.08 is: 174,402.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,351.35 : 315,118.37 = 126,381.08 : x
  2. Step 2: Convert to fraction form
    228,351.35/315,118.37 = 126,381.08/x
  3. Step 3: Cross multiply
    228,351.35x = 315,118.37 × 126,381.08
  4. Step 4: Simplify right side
    228,351.35x = 39,824,998,668.80
  5. Step 5: Solve for x
    x = 39,824,998,668.80/228,351.35
  6. Step 6: Final answer
    x = 174,402.30

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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.