Home / 356,313.12-491,761.02-218,467.65

Finding the Fourth Proportional to 356,313.12, 491,761.02 and 218,467.65

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Solution

The fourth proportional to 356,313.12, 491,761.02 and 218,467.65 is: 301,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,313.12 : 491,761.02 = 218,467.65 : x
  2. Step 2: Convert to fraction form
    356,313.12/491,761.02 = 218,467.65/x
  3. Step 3: Cross multiply
    356,313.12x = 491,761.02 × 218,467.65
  4. Step 4: Simplify right side
    356,313.12x = 107,433,876,245.11
  5. Step 5: Solve for x
    x = 107,433,876,245.11/356,313.12
  6. Step 6: Final answer
    x = 301,515.36

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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.