Home / 211,435.24-291,766.38-115,939.90

Finding the Fourth Proportional to 211,435.24, 291,766.38 and 115,939.90

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Solution

The fourth proportional to 211,435.24, 291,766.38 and 115,939.90 is: 159,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,435.24 : 291,766.38 = 115,939.90 : x
  2. Step 2: Convert to fraction form
    211,435.24/291,766.38 = 115,939.90/x
  3. Step 3: Cross multiply
    211,435.24x = 291,766.38 × 115,939.90
  4. Step 4: Simplify right side
    211,435.24x = 33,827,364,920.56
  5. Step 5: Solve for x
    x = 33,827,364,920.56/211,435.24
  6. Step 6: Final answer
    x = 159,989.25

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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.