Home / 217,998.12-300,805.61-121,194.21

Finding the Fourth Proportional to 217,998.12, 300,805.61 and 121,194.21

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Solution

The fourth proportional to 217,998.12, 300,805.61 and 121,194.21 is: 167,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,998.12 : 300,805.61 = 121,194.21 : x
  2. Step 2: Convert to fraction form
    217,998.12/300,805.61 = 121,194.21/x
  3. Step 3: Cross multiply
    217,998.12x = 300,805.61 × 121,194.21
  4. Step 4: Simplify right side
    217,998.12x = 36,455,898,267.52
  5. Step 5: Solve for x
    x = 36,455,898,267.52/217,998.12
  6. Step 6: Final answer
    x = 167,230.33

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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.