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Finding the Fourth Proportional to 441,005.38, 661,633.70 and 216,433.30

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Solution

The fourth proportional to 441,005.38, 661,633.70 and 216,433.30 is: 324,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,005.38 : 661,633.70 = 216,433.30 : x
  2. Step 2: Convert to fraction form
    441,005.38/661,633.70 = 216,433.30/x
  3. Step 3: Cross multiply
    441,005.38x = 661,633.70 × 216,433.30
  4. Step 4: Simplify right side
    441,005.38x = 143,199,565,082.21
  5. Step 5: Solve for x
    x = 143,199,565,082.21/441,005.38
  6. Step 6: Final answer
    x = 324,711.61

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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.