Home / 818,771.31-1,227,987.81-219,590.03

Finding the Fourth Proportional to 818,771.31, 1,227,987.81 and 219,590.03

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Solution

The fourth proportional to 818,771.31, 1,227,987.81 and 219,590.03 is: 329,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,771.31 : 1,227,987.81 = 219,590.03 : x
  2. Step 2: Convert to fraction form
    818,771.31/1,227,987.81 = 219,590.03/x
  3. Step 3: Cross multiply
    818,771.31x = 1,227,987.81 × 219,590.03
  4. Step 4: Simplify right side
    818,771.31x = 269,653,880,037.53
  5. Step 5: Solve for x
    x = 269,653,880,037.53/818,771.31
  6. Step 6: Final answer
    x = 329,339.68

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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.