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Finding the Fourth Proportional to 307,169.48, 423,895.97 and 171,212.17

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Solution

The fourth proportional to 307,169.48, 423,895.97 and 171,212.17 is: 236,273.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,169.48 : 423,895.97 = 171,212.17 : x
  2. Step 2: Convert to fraction form
    307,169.48/423,895.97 = 171,212.17/x
  3. Step 3: Cross multiply
    307,169.48x = 423,895.97 × 171,212.17
  4. Step 4: Simplify right side
    307,169.48x = 72,576,148,877.95
  5. Step 5: Solve for x
    x = 72,576,148,877.95/307,169.48
  6. Step 6: Final answer
    x = 236,273.96

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1.5x scale

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.