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Finding the Fourth Proportional to 180,685.44, 270,979.20 and 75,482.40

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Solution

The fourth proportional to 180,685.44, 270,979.20 and 75,482.40 is: 113,203.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,685.44 : 270,979.20 = 75,482.40 : x
  2. Step 2: Convert to fraction form
    180,685.44/270,979.20 = 75,482.40/x
  3. Step 3: Cross multiply
    180,685.44x = 270,979.20 × 75,482.40
  4. Step 4: Simplify right side
    180,685.44x = 20,454,160,366.08
  5. Step 5: Solve for x
    x = 20,454,160,366.08/180,685.44
  6. Step 6: Final answer
    x = 113,203.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.