Home / 411,036.21-616,540.43-144,789.78

Finding the Fourth Proportional to 411,036.21, 616,540.43 and 144,789.78

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Solution

The fourth proportional to 411,036.21, 616,540.43 and 144,789.78 is: 217,179.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,036.21 : 616,540.43 = 144,789.78 : x
  2. Step 2: Convert to fraction form
    411,036.21/616,540.43 = 144,789.78/x
  3. Step 3: Cross multiply
    411,036.21x = 616,540.43 × 144,789.78
  4. Step 4: Simplify right side
    411,036.21x = 89,268,752,496.86
  5. Step 5: Solve for x
    x = 89,268,752,496.86/411,036.21
  6. Step 6: Final answer
    x = 217,179.78

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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.