Home / 391,764.96-540,758.70-222,112.08

Finding the Fourth Proportional to 391,764.96, 540,758.70 and 222,112.08

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Solution

The fourth proportional to 391,764.96, 540,758.70 and 222,112.08 is: 306,584.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,764.96 : 540,758.70 = 222,112.08 : x
  2. Step 2: Convert to fraction form
    391,764.96/540,758.70 = 222,112.08/x
  3. Step 3: Cross multiply
    391,764.96x = 540,758.70 × 222,112.08
  4. Step 4: Simplify right side
    391,764.96x = 120,109,039,635.10
  5. Step 5: Solve for x
    x = 120,109,039,635.10/391,764.96
  6. Step 6: Final answer
    x = 306,584.44

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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.