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Finding the Fourth Proportional to 218,645.32, 301,627.44 and 127,945.65

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Solution

The fourth proportional to 218,645.32, 301,627.44 and 127,945.65 is: 176,504.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,645.32 : 301,627.44 = 127,945.65 : x
  2. Step 2: Convert to fraction form
    218,645.32/301,627.44 = 127,945.65/x
  3. Step 3: Cross multiply
    218,645.32x = 301,627.44 × 127,945.65
  4. Step 4: Simplify right side
    218,645.32x = 38,591,918,217.33
  5. Step 5: Solve for x
    x = 38,591,918,217.33/218,645.32
  6. Step 6: Final answer
    x = 176,504.66

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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.