Home / 231,429.62-319,357.84-129,437.42

Finding the Fourth Proportional to 231,429.62, 319,357.84 and 129,437.42

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Solution

The fourth proportional to 231,429.62, 319,357.84 and 129,437.42 is: 178,615.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,429.62 : 319,357.84 = 129,437.42 : x
  2. Step 2: Convert to fraction form
    231,429.62/319,357.84 = 129,437.42/x
  3. Step 3: Cross multiply
    231,429.62x = 319,357.84 × 129,437.42
  4. Step 4: Simplify right side
    231,429.62x = 41,336,854,866.37
  5. Step 5: Solve for x
    x = 41,336,854,866.37/231,429.62
  6. Step 6: Final answer
    x = 178,615.23

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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.