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Finding the Fourth Proportional to 664,485.60, 996,874.20 and 215,227.20

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Solution

The fourth proportional to 664,485.60, 996,874.20 and 215,227.20 is: 322,888.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,485.60 : 996,874.20 = 215,227.20 : x
  2. Step 2: Convert to fraction form
    664,485.60/996,874.20 = 215,227.20/x
  3. Step 3: Cross multiply
    664,485.60x = 996,874.20 × 215,227.20
  4. Step 4: Simplify right side
    664,485.60x = 214,554,442,818.24
  5. Step 5: Solve for x
    x = 214,554,442,818.24/664,485.60
  6. Step 6: Final answer
    x = 322,888.02

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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.