Home / 319,968.01-479,979.56-83,311.12

Finding the Fourth Proportional to 319,968.01, 479,979.56 and 83,311.12

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Solution

The fourth proportional to 319,968.01, 479,979.56 and 83,311.12 is: 124,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,968.01 : 479,979.56 = 83,311.12 : x
  2. Step 2: Convert to fraction form
    319,968.01/479,979.56 = 83,311.12/x
  3. Step 3: Cross multiply
    319,968.01x = 479,979.56 × 83,311.12
  4. Step 4: Simplify right side
    319,968.01x = 39,987,634,720.71
  5. Step 5: Solve for x
    x = 39,987,634,720.71/319,968.01
  6. Step 6: Final answer
    x = 124,973.85

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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.