Home / 338,934.17-508,099.23-128,719.73

Finding the Fourth Proportional to 338,934.17, 508,099.23 and 128,719.73

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Solution

The fourth proportional to 338,934.17, 508,099.23 and 128,719.73 is: 192,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,934.17 : 508,099.23 = 128,719.73 : x
  2. Step 2: Convert to fraction form
    338,934.17/508,099.23 = 128,719.73/x
  3. Step 3: Cross multiply
    338,934.17x = 508,099.23 × 128,719.73
  4. Step 4: Simplify right side
    338,934.17x = 65,402,396,969.06
  5. Step 5: Solve for x
    x = 65,402,396,969.06/338,934.17
  6. Step 6: Final answer
    x = 192,964.89

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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.