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Finding the Fourth Proportional to 307,074.99, 423,759.17 and 171,114.66

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Solution

The fourth proportional to 307,074.99, 423,759.17 and 171,114.66 is: 236,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,074.99 : 423,759.17 = 171,114.66 : x
  2. Step 2: Convert to fraction form
    307,074.99/423,759.17 = 171,114.66/x
  3. Step 3: Cross multiply
    307,074.99x = 423,759.17 × 171,114.66
  4. Step 4: Simplify right side
    307,074.99x = 72,511,406,296.43
  5. Step 5: Solve for x
    x = 72,511,406,296.43/307,074.99
  6. Step 6: Final answer
    x = 236,135.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.