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Finding the Fourth Proportional to 285,439.20, 428,158.80 and 167,049.60

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Solution

The fourth proportional to 285,439.20, 428,158.80 and 167,049.60 is: 250,574.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,439.20 : 428,158.80 = 167,049.60 : x
  2. Step 2: Convert to fraction form
    285,439.20/428,158.80 = 167,049.60/x
  3. Step 3: Cross multiply
    285,439.20x = 428,158.80 × 167,049.60
  4. Step 4: Simplify right side
    285,439.20x = 71,523,756,276.48
  5. Step 5: Solve for x
    x = 71,523,756,276.48/285,439.20
  6. Step 6: Final answer
    x = 250,574.40

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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.