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Finding the Fourth Proportional to 301,170.90, 451,591.32 and 138,888.78

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Solution

The fourth proportional to 301,170.90, 451,591.32 and 138,888.78 is: 208,257.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,170.90 : 451,591.32 = 138,888.78 : x
  2. Step 2: Convert to fraction form
    301,170.90/451,591.32 = 138,888.78/x
  3. Step 3: Cross multiply
    301,170.90x = 451,591.32 × 138,888.78
  4. Step 4: Simplify right side
    301,170.90x = 62,720,967,493.39
  5. Step 5: Solve for x
    x = 62,720,967,493.39/301,170.90
  6. Step 6: Final answer
    x = 208,257.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.