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Finding the Fourth Proportional to 664,282.80, 996,424.20 and 264,717.90

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Solution

The fourth proportional to 664,282.80, 996,424.20 and 264,717.90 is: 397,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,282.80 : 996,424.20 = 264,717.90 : x
  2. Step 2: Convert to fraction form
    664,282.80/996,424.20 = 264,717.90/x
  3. Step 3: Cross multiply
    664,282.80x = 996,424.20 × 264,717.90
  4. Step 4: Simplify right side
    664,282.80x = 263,771,321,733.18
  5. Step 5: Solve for x
    x = 263,771,321,733.18/664,282.80
  6. Step 6: Final answer
    x = 397,076.85

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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.