Home / 319,890.16-479,836.59-83,215.75

Finding the Fourth Proportional to 319,890.16, 479,836.59 and 83,215.75

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Solution

The fourth proportional to 319,890.16, 479,836.59 and 83,215.75 is: 124,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,890.16 : 479,836.59 = 83,215.75 : x
  2. Step 2: Convert to fraction form
    319,890.16/479,836.59 = 83,215.75/x
  3. Step 3: Cross multiply
    319,890.16x = 479,836.59 × 83,215.75
  4. Step 4: Simplify right side
    319,890.16x = 39,929,960,306.66
  5. Step 5: Solve for x
    x = 39,929,960,306.66/319,890.16
  6. Step 6: Final answer
    x = 124,823.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.