Home / 199,612.40-299,418.60-172,785.20

Finding the Fourth Proportional to 199,612.40, 299,418.60 and 172,785.20

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Solution

The fourth proportional to 199,612.40, 299,418.60 and 172,785.20 is: 259,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,612.40 : 299,418.60 = 172,785.20 : x
  2. Step 2: Convert to fraction form
    199,612.40/299,418.60 = 172,785.20/x
  3. Step 3: Cross multiply
    199,612.40x = 299,418.60 × 172,785.20
  4. Step 4: Simplify right side
    199,612.40x = 51,735,102,684.72
  5. Step 5: Solve for x
    x = 51,735,102,684.72/199,612.40
  6. Step 6: Final answer
    x = 259,177.80

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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.