Home / 311,872.20-430,499.76-242,824.56

Finding the Fourth Proportional to 311,872.20, 430,499.76 and 242,824.56

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Solution

The fourth proportional to 311,872.20, 430,499.76 and 242,824.56 is: 335,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,872.20 : 430,499.76 = 242,824.56 : x
  2. Step 2: Convert to fraction form
    311,872.20/430,499.76 = 242,824.56/x
  3. Step 3: Cross multiply
    311,872.20x = 430,499.76 × 242,824.56
  4. Step 4: Simplify right side
    311,872.20x = 104,535,914,802.11
  5. Step 5: Solve for x
    x = 104,535,914,802.11/311,872.20
  6. Step 6: Final answer
    x = 335,188.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.