Home / 499,115.39-748,799.39-139,286.21

Finding the Fourth Proportional to 499,115.39, 748,799.39 and 139,286.21

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Solution

The fourth proportional to 499,115.39, 748,799.39 and 139,286.21 is: 208,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,115.39 : 748,799.39 = 139,286.21 : x
  2. Step 2: Convert to fraction form
    499,115.39/748,799.39 = 139,286.21/x
  3. Step 3: Cross multiply
    499,115.39x = 748,799.39 × 139,286.21
  4. Step 4: Simplify right side
    499,115.39x = 104,297,429,083.41
  5. Step 5: Solve for x
    x = 104,297,429,083.41/499,115.39
  6. Step 6: Final answer
    x = 208,964.56

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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.