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Finding the Fourth Proportional to 664,789.80, 996,990.30 and 238,276.20

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Solution

The fourth proportional to 664,789.80, 996,990.30 and 238,276.20 is: 357,344.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,789.80 : 996,990.30 = 238,276.20 : x
  2. Step 2: Convert to fraction form
    664,789.80/996,990.30 = 238,276.20/x
  3. Step 3: Cross multiply
    664,789.80x = 996,990.30 × 238,276.20
  4. Step 4: Simplify right side
    664,789.80x = 237,559,060,120.86
  5. Step 5: Solve for x
    x = 237,559,060,120.86/664,789.80
  6. Step 6: Final answer
    x = 357,344.62

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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.