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Finding the Fourth Proportional to 211,872.60, 317,517.30 and 140,592.60

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Solution

The fourth proportional to 211,872.60, 317,517.30 and 140,592.60 is: 210,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,872.60 : 317,517.30 = 140,592.60 : x
  2. Step 2: Convert to fraction form
    211,872.60/317,517.30 = 140,592.60/x
  3. Step 3: Cross multiply
    211,872.60x = 317,517.30 × 140,592.60
  4. Step 4: Simplify right side
    211,872.60x = 44,640,582,751.98
  5. Step 5: Solve for x
    x = 44,640,582,751.98/211,872.60
  6. Step 6: Final answer
    x = 210,695.40

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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.