Home / 721,578.17-1,082,542.22-216,138.17

Finding the Fourth Proportional to 721,578.17, 1,082,542.22 and 216,138.17

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Solution

The fourth proportional to 721,578.17, 1,082,542.22 and 216,138.17 is: 324,259.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,578.17 : 1,082,542.22 = 216,138.17 : x
  2. Step 2: Convert to fraction form
    721,578.17/1,082,542.22 = 216,138.17/x
  3. Step 3: Cross multiply
    721,578.17x = 1,082,542.22 × 216,138.17
  4. Step 4: Simplify right side
    721,578.17x = 233,978,694,378.54
  5. Step 5: Solve for x
    x = 233,978,694,378.54/721,578.17
  6. Step 6: Final answer
    x = 324,259.66

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1.5x scale

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.