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Finding the Fourth Proportional to 395,456.68, 545,769.18 and 225,716.32

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Solution

The fourth proportional to 395,456.68, 545,769.18 and 225,716.32 is: 311,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,456.68 : 545,769.18 = 225,716.32 : x
  2. Step 2: Convert to fraction form
    395,456.68/545,769.18 = 225,716.32/x
  3. Step 3: Cross multiply
    395,456.68x = 545,769.18 × 225,716.32
  4. Step 4: Simplify right side
    395,456.68x = 123,189,010,879.02
  5. Step 5: Solve for x
    x = 123,189,010,879.02/395,456.68
  6. Step 6: Final answer
    x = 311,510.76

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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.