Home / 283,716.16-390,997.92-211,969.60

Finding the Fourth Proportional to 283,716.16, 390,997.92 and 211,969.60

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Solution

The fourth proportional to 283,716.16, 390,997.92 and 211,969.60 is: 292,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,716.16 : 390,997.92 = 211,969.60 : x
  2. Step 2: Convert to fraction form
    283,716.16/390,997.92 = 211,969.60/x
  3. Step 3: Cross multiply
    283,716.16x = 390,997.92 × 211,969.60
  4. Step 4: Simplify right side
    283,716.16x = 82,879,672,703.23
  5. Step 5: Solve for x
    x = 82,879,672,703.23/283,716.16
  6. Step 6: Final answer
    x = 292,121.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.