Home / 421,387.88-581,511.30-230,399.24

Finding the Fourth Proportional to 421,387.88, 581,511.30 and 230,399.24

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Solution

The fourth proportional to 421,387.88, 581,511.30 and 230,399.24 is: 317,948.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,387.88 : 581,511.30 = 230,399.24 : x
  2. Step 2: Convert to fraction form
    421,387.88/581,511.30 = 230,399.24/x
  3. Step 3: Cross multiply
    421,387.88x = 581,511.30 × 230,399.24
  4. Step 4: Simplify right side
    421,387.88x = 133,979,761,571.41
  5. Step 5: Solve for x
    x = 133,979,761,571.41/421,387.88
  6. Step 6: Final answer
    x = 317,948.78

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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.