Home / 338,922.20-508,383.30-128,532.80

Finding the Fourth Proportional to 338,922.20, 508,383.30 and 128,532.80

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Solution

The fourth proportional to 338,922.20, 508,383.30 and 128,532.80 is: 192,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,922.20 : 508,383.30 = 128,532.80 : x
  2. Step 2: Convert to fraction form
    338,922.20/508,383.30 = 128,532.80/x
  3. Step 3: Cross multiply
    338,922.20x = 508,383.30 × 128,532.80
  4. Step 4: Simplify right side
    338,922.20x = 65,343,929,022.24
  5. Step 5: Solve for x
    x = 65,343,929,022.24/338,922.20
  6. Step 6: Final answer
    x = 192,799.20

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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.