Home / 642,972.16-964,147.20-222,100.48

Finding the Fourth Proportional to 642,972.16, 964,147.20 and 222,100.48

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Solution

The fourth proportional to 642,972.16, 964,147.20 and 222,100.48 is: 333,043.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,972.16 : 964,147.20 = 222,100.48 : x
  2. Step 2: Convert to fraction form
    642,972.16/964,147.20 = 222,100.48/x
  3. Step 3: Cross multiply
    642,972.16x = 964,147.20 × 222,100.48
  4. Step 4: Simplify right side
    642,972.16x = 214,137,555,910.66
  5. Step 5: Solve for x
    x = 214,137,555,910.66/642,972.16
  6. Step 6: Final answer
    x = 333,043.28

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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.