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Finding the Fourth Proportional to 305,788.35, 458,480.07 and 145,888.97

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Solution

The fourth proportional to 305,788.35, 458,480.07 and 145,888.97 is: 218,736.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,788.35 : 458,480.07 = 145,888.97 : x
  2. Step 2: Convert to fraction form
    305,788.35/458,480.07 = 145,888.97/x
  3. Step 3: Cross multiply
    305,788.35x = 458,480.07 × 145,888.97
  4. Step 4: Simplify right side
    305,788.35x = 66,887,182,885.43
  5. Step 5: Solve for x
    x = 66,887,182,885.43/305,788.35
  6. Step 6: Final answer
    x = 218,736.86

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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.