Home / 318,415.22-477,844.26-205,816.16

Finding the Fourth Proportional to 318,415.22, 477,844.26 and 205,816.16

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Solution

The fourth proportional to 318,415.22, 477,844.26 and 205,816.16 is: 308,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,415.22 : 477,844.26 = 205,816.16 : x
  2. Step 2: Convert to fraction form
    318,415.22/477,844.26 = 205,816.16/x
  3. Step 3: Cross multiply
    318,415.22x = 477,844.26 × 205,816.16
  4. Step 4: Simplify right side
    318,415.22x = 98,348,067,896.12
  5. Step 5: Solve for x
    x = 98,348,067,896.12/318,415.22
  6. Step 6: Final answer
    x = 308,867.36

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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.