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Finding the Fourth Proportional to 171,380.60, 257,070.90 and 170,214.20

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Solution

The fourth proportional to 171,380.60, 257,070.90 and 170,214.20 is: 255,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,380.60 : 257,070.90 = 170,214.20 : x
  2. Step 2: Convert to fraction form
    171,380.60/257,070.90 = 170,214.20/x
  3. Step 3: Cross multiply
    171,380.60x = 257,070.90 × 170,214.20
  4. Step 4: Simplify right side
    171,380.60x = 43,757,117,586.78
  5. Step 5: Solve for x
    x = 43,757,117,586.78/171,380.60
  6. Step 6: Final answer
    x = 255,321.30

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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.