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Finding the Fourth Proportional to 305,470.80, 458,249.40 and 95,086.80

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Solution

The fourth proportional to 305,470.80, 458,249.40 and 95,086.80 is: 142,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,470.80 : 458,249.40 = 95,086.80 : x
  2. Step 2: Convert to fraction form
    305,470.80/458,249.40 = 95,086.80/x
  3. Step 3: Cross multiply
    305,470.80x = 458,249.40 × 95,086.80
  4. Step 4: Simplify right side
    305,470.80x = 43,573,469,047.92
  5. Step 5: Solve for x
    x = 43,573,469,047.92/305,470.80
  6. Step 6: Final answer
    x = 142,643.65

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1.5x scale

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.