Home / 331,107.20-496,981.56-313,125.20

Finding the Fourth Proportional to 331,107.20, 496,981.56 and 313,125.20

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Solution

The fourth proportional to 331,107.20, 496,981.56 and 313,125.20 is: 469,991.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,107.20 : 496,981.56 = 313,125.20 : x
  2. Step 2: Convert to fraction form
    331,107.20/496,981.56 = 313,125.20/x
  3. Step 3: Cross multiply
    331,107.20x = 496,981.56 × 313,125.20
  4. Step 4: Simplify right side
    331,107.20x = 155,617,450,371.31
  5. Step 5: Solve for x
    x = 155,617,450,371.31/331,107.20
  6. Step 6: Final answer
    x = 469,991.14

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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.