Home / 217,321.34-299,966-131,266.64

Finding the Fourth Proportional to 217,321.34, 299,966 and 131,266.64

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Solution

The fourth proportional to 217,321.34, 299,966 and 131,266.64 is: 181,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,321.34 : 299,966 = 131,266.64 : x
  2. Step 2: Convert to fraction form
    217,321.34/299,966 = 131,266.64/x
  3. Step 3: Cross multiply
    217,321.34x = 299,966 × 131,266.64
  4. Step 4: Simplify right side
    217,321.34x = 39,375,528,934.24
  5. Step 5: Solve for x
    x = 39,375,528,934.24/217,321.34
  6. Step 6: Final answer
    x = 181,185.75

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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.