Home / 319,979.02-479,968.56-83,321.02

Finding the Fourth Proportional to 319,979.02, 479,968.56 and 83,321.02

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Solution

The fourth proportional to 319,979.02, 479,968.56 and 83,321.02 is: 124,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,979.02 : 479,968.56 = 83,321.02 : x
  2. Step 2: Convert to fraction form
    319,979.02/479,968.56 = 83,321.02/x
  3. Step 3: Cross multiply
    319,979.02x = 479,968.56 × 83,321.02
  4. Step 4: Simplify right side
    319,979.02x = 39,991,469,987.13
  5. Step 5: Solve for x
    x = 39,991,469,987.13/319,979.02
  6. Step 6: Final answer
    x = 124,981.54

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Similar ratio
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1.5x scale

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.