Home / 660,666.24-991,147.03-211,414.07

Finding the Fourth Proportional to 660,666.24, 991,147.03 and 211,414.07

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Solution

The fourth proportional to 660,666.24, 991,147.03 and 211,414.07 is: 317,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,666.24 : 991,147.03 = 211,414.07 : x
  2. Step 2: Convert to fraction form
    660,666.24/991,147.03 = 211,414.07/x
  3. Step 3: Cross multiply
    660,666.24x = 991,147.03 × 211,414.07
  4. Step 4: Simplify right side
    660,666.24x = 209,542,429,530.05
  5. Step 5: Solve for x
    x = 209,542,429,530.05/660,666.24
  6. Step 6: Final answer
    x = 317,168.36

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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.