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Finding the Fourth Proportional to 231,791.63, 319,888.44 and 129,825.18

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Solution

The fourth proportional to 231,791.63, 319,888.44 and 129,825.18 is: 179,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,791.63 : 319,888.44 = 129,825.18 : x
  2. Step 2: Convert to fraction form
    231,791.63/319,888.44 = 129,825.18/x
  3. Step 3: Cross multiply
    231,791.63x = 319,888.44 × 129,825.18
  4. Step 4: Simplify right side
    231,791.63x = 41,529,574,302.92
  5. Step 5: Solve for x
    x = 41,529,574,302.92/231,791.63
  6. Step 6: Final answer
    x = 179,167.71

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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.