Home / 215,839.28-323,574.31-82,815

Finding the Fourth Proportional to 215,839.28, 323,574.31 and 82,815

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Solution

The fourth proportional to 215,839.28, 323,574.31 and 82,815 is: 124,151.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,839.28 : 323,574.31 = 82,815 : x
  2. Step 2: Convert to fraction form
    215,839.28/323,574.31 = 82,815/x
  3. Step 3: Cross multiply
    215,839.28x = 323,574.31 × 82,815
  4. Step 4: Simplify right side
    215,839.28x = 26,796,806,482.65
  5. Step 5: Solve for x
    x = 26,796,806,482.65/215,839.28
  6. Step 6: Final answer
    x = 124,151.67

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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.