Home / 414,428.28-621,839.25-214,711.44

Finding the Fourth Proportional to 414,428.28, 621,839.25 and 214,711.44

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Solution

The fourth proportional to 414,428.28, 621,839.25 and 214,711.44 is: 322,169.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,428.28 : 621,839.25 = 214,711.44 : x
  2. Step 2: Convert to fraction form
    414,428.28/621,839.25 = 214,711.44/x
  3. Step 3: Cross multiply
    414,428.28x = 621,839.25 × 214,711.44
  4. Step 4: Simplify right side
    414,428.28x = 133,516,000,816.02
  5. Step 5: Solve for x
    x = 133,516,000,816.02/414,428.28
  6. Step 6: Final answer
    x = 322,169.14

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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.