Home / 216,558.27-324,689.57-115,371.45

Finding the Fourth Proportional to 216,558.27, 324,689.57 and 115,371.45

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Solution

The fourth proportional to 216,558.27, 324,689.57 and 115,371.45 is: 172,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,558.27 : 324,689.57 = 115,371.45 : x
  2. Step 2: Convert to fraction form
    216,558.27/324,689.57 = 115,371.45/x
  3. Step 3: Cross multiply
    216,558.27x = 324,689.57 × 115,371.45
  4. Step 4: Simplify right side
    216,558.27x = 37,459,904,867.33
  5. Step 5: Solve for x
    x = 37,459,904,867.33/216,558.27
  6. Step 6: Final answer
    x = 172,978.41

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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.