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Finding the Fourth Proportional to 231,571.78, 319,574.77 and 129,596.42

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Solution

The fourth proportional to 231,571.78, 319,574.77 and 129,596.42 is: 178,846.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,571.78 : 319,574.77 = 129,596.42 : x
  2. Step 2: Convert to fraction form
    231,571.78/319,574.77 = 129,596.42/x
  3. Step 3: Cross multiply
    231,571.78x = 319,574.77 × 129,596.42
  4. Step 4: Simplify right side
    231,571.78x = 41,415,746,589.27
  5. Step 5: Solve for x
    x = 41,415,746,589.27/231,571.78
  6. Step 6: Final answer
    x = 178,846.26

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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.