Home / 383,908.10-576,121.35-215,428.10

Finding the Fourth Proportional to 383,908.10, 576,121.35 and 215,428.10

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Solution

The fourth proportional to 383,908.10, 576,121.35 and 215,428.10 is: 323,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,908.10 : 576,121.35 = 215,428.10 : x
  2. Step 2: Convert to fraction form
    383,908.10/576,121.35 = 215,428.10/x
  3. Step 3: Cross multiply
    383,908.10x = 576,121.35 × 215,428.10
  4. Step 4: Simplify right side
    383,908.10x = 124,112,727,799.94
  5. Step 5: Solve for x
    x = 124,112,727,799.94/383,908.10
  6. Step 6: Final answer
    x = 323,287.60

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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.