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Finding the Fourth Proportional to 454,934.40, 682,336.80 and 155,428.80

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Solution

The fourth proportional to 454,934.40, 682,336.80 and 155,428.80 is: 233,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,934.40 : 682,336.80 = 155,428.80 : x
  2. Step 2: Convert to fraction form
    454,934.40/682,336.80 = 155,428.80/x
  3. Step 3: Cross multiply
    454,934.40x = 682,336.80 × 155,428.80
  4. Step 4: Simplify right side
    454,934.40x = 106,054,790,019.84
  5. Step 5: Solve for x
    x = 106,054,790,019.84/454,934.40
  6. Step 6: Final answer
    x = 233,121.06

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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.