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Finding the Fourth Proportional to 228,600.74, 315,458.07 and 126,619.31

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Solution

The fourth proportional to 228,600.74, 315,458.07 and 126,619.31 is: 174,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,600.74 : 315,458.07 = 126,619.31 : x
  2. Step 2: Convert to fraction form
    228,600.74/315,458.07 = 126,619.31/x
  3. Step 3: Cross multiply
    228,600.74x = 315,458.07 × 126,619.31
  4. Step 4: Simplify right side
    228,600.74x = 39,943,083,157.33
  5. Step 5: Solve for x
    x = 39,943,083,157.33/228,600.74
  6. Step 6: Final answer
    x = 174,728.58

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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.