Home / 318,107.43-438,989.19-182,143.47

Finding the Fourth Proportional to 318,107.43, 438,989.19 and 182,143.47

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Solution

The fourth proportional to 318,107.43, 438,989.19 and 182,143.47 is: 251,358.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,107.43 : 438,989.19 = 182,143.47 : x
  2. Step 2: Convert to fraction form
    318,107.43/438,989.19 = 182,143.47/x
  3. Step 3: Cross multiply
    318,107.43x = 438,989.19 × 182,143.47
  4. Step 4: Simplify right side
    318,107.43x = 79,959,014,359.09
  5. Step 5: Solve for x
    x = 79,959,014,359.09/318,107.43
  6. Step 6: Final answer
    x = 251,358.52

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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.