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Finding the Fourth Proportional to 285,385.20, 428,077.80 and 166,995.60

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Solution

The fourth proportional to 285,385.20, 428,077.80 and 166,995.60 is: 250,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,385.20 : 428,077.80 = 166,995.60 : x
  2. Step 2: Convert to fraction form
    285,385.20/428,077.80 = 166,995.60/x
  3. Step 3: Cross multiply
    285,385.20x = 428,077.80 × 166,995.60
  4. Step 4: Simplify right side
    285,385.20x = 71,487,109,057.68
  5. Step 5: Solve for x
    x = 71,487,109,057.68/285,385.20
  6. Step 6: Final answer
    x = 250,493.40

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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.