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Finding the Fourth Proportional to 307,163.67, 423,884.91 and 171,196.05

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Solution

The fourth proportional to 307,163.67, 423,884.91 and 171,196.05 is: 236,250.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,163.67 : 423,884.91 = 171,196.05 : x
  2. Step 2: Convert to fraction form
    307,163.67/423,884.91 = 171,196.05/x
  3. Step 3: Cross multiply
    307,163.67x = 423,884.91 × 171,196.05
  4. Step 4: Simplify right side
    307,163.67x = 72,567,422,246.61
  5. Step 5: Solve for x
    x = 72,567,422,246.61/307,163.67
  6. Step 6: Final answer
    x = 236,250.02

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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.