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Finding the Fourth Proportional to 441,381.40, 661,391.70 and 328,532.20

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Solution

The fourth proportional to 441,381.40, 661,391.70 and 328,532.20 is: 492,291.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,381.40 : 661,391.70 = 328,532.20 : x
  2. Step 2: Convert to fraction form
    441,381.40/661,391.70 = 328,532.20/x
  3. Step 3: Cross multiply
    441,381.40x = 661,391.70 × 328,532.20
  4. Step 4: Simplify right side
    441,381.40x = 217,288,470,262.74
  5. Step 5: Solve for x
    x = 217,288,470,262.74/441,381.40
  6. Step 6: Final answer
    x = 492,291.86

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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.