Home / 661,025.28-991,561.44-211,687.76

Finding the Fourth Proportional to 661,025.28, 991,561.44 and 211,687.76

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Solution

The fourth proportional to 661,025.28, 991,561.44 and 211,687.76 is: 317,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,025.28 : 991,561.44 = 211,687.76 : x
  2. Step 2: Convert to fraction form
    661,025.28/991,561.44 = 211,687.76/x
  3. Step 3: Cross multiply
    661,025.28x = 991,561.44 × 211,687.76
  4. Step 4: Simplify right side
    661,025.28x = 209,901,420,135.97
  5. Step 5: Solve for x
    x = 209,901,420,135.97/661,025.28
  6. Step 6: Final answer
    x = 317,539.17

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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.