Home / 391,928.22-540,976.05-255,982.95

Finding the Fourth Proportional to 391,928.22, 540,976.05 and 255,982.95

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Solution

The fourth proportional to 391,928.22, 540,976.05 and 255,982.95 is: 353,331.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,928.22 : 540,976.05 = 255,982.95 : x
  2. Step 2: Convert to fraction form
    391,928.22/540,976.05 = 255,982.95/x
  3. Step 3: Cross multiply
    391,928.22x = 540,976.05 × 255,982.95
  4. Step 4: Simplify right side
    391,928.22x = 138,480,645,158.35
  5. Step 5: Solve for x
    x = 138,480,645,158.35/391,928.22
  6. Step 6: Final answer
    x = 353,331.65

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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.