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Finding the Fourth Proportional to 485,280.56, 728,019.26 and 169,958.90

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Solution

The fourth proportional to 485,280.56, 728,019.26 and 169,958.90 is: 254,972.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,280.56 : 728,019.26 = 169,958.90 : x
  2. Step 2: Convert to fraction form
    485,280.56/728,019.26 = 169,958.90/x
  3. Step 3: Cross multiply
    485,280.56x = 728,019.26 × 169,958.90
  4. Step 4: Simplify right side
    485,280.56x = 123,733,352,608.41
  5. Step 5: Solve for x
    x = 123,733,352,608.41/485,280.56
  6. Step 6: Final answer
    x = 254,972.82

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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.