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Finding the Fourth Proportional to 307,169.72, 423,842.81 and 171,173.85

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Solution

The fourth proportional to 307,169.72, 423,842.81 and 171,173.85 is: 236,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,169.72 : 423,842.81 = 171,173.85 : x
  2. Step 2: Convert to fraction form
    307,169.72/423,842.81 = 171,173.85/x
  3. Step 3: Cross multiply
    307,169.72x = 423,842.81 × 171,173.85
  4. Step 4: Simplify right side
    307,169.72x = 72,550,805,582.52
  5. Step 5: Solve for x
    x = 72,550,805,582.52/307,169.72
  6. Step 6: Final answer
    x = 236,191.27

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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.