Home / 391,251.13-539,928.81-230,112.97

Finding the Fourth Proportional to 391,251.13, 539,928.81 and 230,112.97

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Solution

The fourth proportional to 391,251.13, 539,928.81 and 230,112.97 is: 317,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,251.13 : 539,928.81 = 230,112.97 : x
  2. Step 2: Convert to fraction form
    391,251.13/539,928.81 = 230,112.97/x
  3. Step 3: Cross multiply
    391,251.13x = 539,928.81 × 230,112.97
  4. Step 4: Simplify right side
    391,251.13x = 124,244,620,907.10
  5. Step 5: Solve for x
    x = 124,244,620,907.10/391,251.13
  6. Step 6: Final answer
    x = 317,557.22

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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.