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Finding the Fourth Proportional to 285,464.80, 428,096.40 and 98,432.80

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Solution

The fourth proportional to 285,464.80, 428,096.40 and 98,432.80 is: 147,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,464.80 : 428,096.40 = 98,432.80 : x
  2. Step 2: Convert to fraction form
    285,464.80/428,096.40 = 98,432.80/x
  3. Step 3: Cross multiply
    285,464.80x = 428,096.40 × 98,432.80
  4. Step 4: Simplify right side
    285,464.80x = 42,138,727,321.92
  5. Step 5: Solve for x
    x = 42,138,727,321.92/285,464.80
  6. Step 6: Final answer
    x = 147,614.44

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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.