Home / 231,435.42-319,365.88-129,443.24

Finding the Fourth Proportional to 231,435.42, 319,365.88 and 129,443.24

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Solution

The fourth proportional to 231,435.42, 319,365.88 and 129,443.24 is: 178,623.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,435.42 : 319,365.88 = 129,443.24 : x
  2. Step 2: Convert to fraction form
    231,435.42/319,365.88 = 129,443.24/x
  3. Step 3: Cross multiply
    231,435.42x = 319,365.88 × 129,443.24
  4. Step 4: Simplify right side
    231,435.42x = 41,339,754,252.65
  5. Step 5: Solve for x
    x = 41,339,754,252.65/231,435.42
  6. Step 6: Final answer
    x = 178,623.28

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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.