Home / 331,945.28-458,028.96-315,131.84

Finding the Fourth Proportional to 331,945.28, 458,028.96 and 315,131.84

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Solution

The fourth proportional to 331,945.28, 458,028.96 and 315,131.84 is: 434,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,945.28 : 458,028.96 = 315,131.84 : x
  2. Step 2: Convert to fraction form
    331,945.28/458,028.96 = 315,131.84/x
  3. Step 3: Cross multiply
    331,945.28x = 458,028.96 × 315,131.84
  4. Step 4: Simplify right side
    331,945.28x = 144,339,508,938.09
  5. Step 5: Solve for x
    x = 144,339,508,938.09/331,945.28
  6. Step 6: Final answer
    x = 434,829.23

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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.