Home / 640,179.24-959,948.92-213,566.56

Finding the Fourth Proportional to 640,179.24, 959,948.92 and 213,566.56

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Solution

The fourth proportional to 640,179.24, 959,948.92 and 213,566.56 is: 320,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,179.24 : 959,948.92 = 213,566.56 : x
  2. Step 2: Convert to fraction form
    640,179.24/959,948.92 = 213,566.56/x
  3. Step 3: Cross multiply
    640,179.24x = 959,948.92 × 213,566.56
  4. Step 4: Simplify right side
    640,179.24x = 205,012,988,620.12
  5. Step 5: Solve for x
    x = 205,012,988,620.12/640,179.24
  6. Step 6: Final answer
    x = 320,243.11

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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.