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Finding the Fourth Proportional to 228,422.34, 315,218.25 and 126,447.75

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Solution

The fourth proportional to 228,422.34, 315,218.25 and 126,447.75 is: 174,495.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,422.34 : 315,218.25 = 126,447.75 : x
  2. Step 2: Convert to fraction form
    228,422.34/315,218.25 = 126,447.75/x
  3. Step 3: Cross multiply
    228,422.34x = 315,218.25 × 126,447.75
  4. Step 4: Simplify right side
    228,422.34x = 39,858,638,471.44
  5. Step 5: Solve for x
    x = 39,858,638,471.44/228,422.34
  6. Step 6: Final answer
    x = 174,495.36

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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.