Home / 307,946.80-421,880.07-296,433.43

Finding the Fourth Proportional to 307,946.80, 421,880.07 and 296,433.43

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Solution

The fourth proportional to 307,946.80, 421,880.07 and 296,433.43 is: 406,107.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,946.80 : 421,880.07 = 296,433.43 : x
  2. Step 2: Convert to fraction form
    307,946.80/421,880.07 = 296,433.43/x
  3. Step 3: Cross multiply
    307,946.80x = 421,880.07 × 296,433.43
  4. Step 4: Simplify right side
    307,946.80x = 125,059,356,198.74
  5. Step 5: Solve for x
    x = 125,059,356,198.74/307,946.80
  6. Step 6: Final answer
    x = 406,107.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.