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Finding the Fourth Proportional to 305,728.80, 458,593.20 and 95,366.40

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Solution

The fourth proportional to 305,728.80, 458,593.20 and 95,366.40 is: 143,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,728.80 : 458,593.20 = 95,366.40 : x
  2. Step 2: Convert to fraction form
    305,728.80/458,593.20 = 95,366.40/x
  3. Step 3: Cross multiply
    305,728.80x = 458,593.20 × 95,366.40
  4. Step 4: Simplify right side
    305,728.80x = 43,734,382,548.48
  5. Step 5: Solve for x
    x = 43,734,382,548.48/305,728.80
  6. Step 6: Final answer
    x = 143,049.60

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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.