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Finding the Fourth Proportional to 663,235.40, 994,610.10 and 214,074.20

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Solution

The fourth proportional to 663,235.40, 994,610.10 and 214,074.20 is: 321,032.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,235.40 : 994,610.10 = 214,074.20 : x
  2. Step 2: Convert to fraction form
    663,235.40/994,610.10 = 214,074.20/x
  3. Step 3: Cross multiply
    663,235.40x = 994,610.10 × 214,074.20
  4. Step 4: Simplify right side
    663,235.40x = 212,920,361,469.42
  5. Step 5: Solve for x
    x = 212,920,361,469.42/663,235.40
  6. Step 6: Final answer
    x = 321,032.87

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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.