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Finding the Fourth Proportional to 299,453.36, 449,201.97 and 86,212.62

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Solution

The fourth proportional to 299,453.36, 449,201.97 and 86,212.62 is: 129,325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,453.36 : 449,201.97 = 86,212.62 : x
  2. Step 2: Convert to fraction form
    299,453.36/449,201.97 = 86,212.62/x
  3. Step 3: Cross multiply
    299,453.36x = 449,201.97 × 86,212.62
  4. Step 4: Simplify right side
    299,453.36x = 38,726,878,742.86
  5. Step 5: Solve for x
    x = 38,726,878,742.86/299,453.36
  6. Step 6: Final answer
    x = 129,325.25

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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.