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Finding the Fourth Proportional to 305,497.58, 458,268.85 and 80,856.49

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Solution

The fourth proportional to 305,497.58, 458,268.85 and 80,856.49 is: 121,290.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,497.58 : 458,268.85 = 80,856.49 : x
  2. Step 2: Convert to fraction form
    305,497.58/458,268.85 = 80,856.49/x
  3. Step 3: Cross multiply
    305,497.58x = 458,268.85 × 80,856.49
  4. Step 4: Simplify right side
    305,497.58x = 37,054,010,687.34
  5. Step 5: Solve for x
    x = 37,054,010,687.34/305,497.58
  6. Step 6: Final answer
    x = 121,290.68

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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.