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Finding the Fourth Proportional to 419,256.40, 628,752.22 and 134,883.61

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Solution

The fourth proportional to 419,256.40, 628,752.22 and 134,883.61 is: 202,282.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,256.40 : 628,752.22 = 134,883.61 : x
  2. Step 2: Convert to fraction form
    419,256.40/628,752.22 = 134,883.61/x
  3. Step 3: Cross multiply
    419,256.40x = 628,752.22 × 134,883.61
  4. Step 4: Simplify right side
    419,256.40x = 84,808,369,229.11
  5. Step 5: Solve for x
    x = 84,808,369,229.11/419,256.40
  6. Step 6: Final answer
    x = 202,282.83

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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.