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Finding the Fourth Proportional to 397,727.56, 548,864.10 and 218,879.56

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Solution

The fourth proportional to 397,727.56, 548,864.10 and 218,879.56 is: 302,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,727.56 : 548,864.10 = 218,879.56 : x
  2. Step 2: Convert to fraction form
    397,727.56/548,864.10 = 218,879.56/x
  3. Step 3: Cross multiply
    397,727.56x = 548,864.10 × 218,879.56
  4. Step 4: Simplify right side
    397,727.56x = 120,135,132,707.80
  5. Step 5: Solve for x
    x = 120,135,132,707.80/397,727.56
  6. Step 6: Final answer
    x = 302,053.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.