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Finding the Fourth Proportional to 229,580.80, 343,399.20 and 206,058.40

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Solution

The fourth proportional to 229,580.80, 343,399.20 and 206,058.40 is: 308,215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,580.80 : 343,399.20 = 206,058.40 : x
  2. Step 2: Convert to fraction form
    229,580.80/343,399.20 = 206,058.40/x
  3. Step 3: Cross multiply
    229,580.80x = 343,399.20 × 206,058.40
  4. Step 4: Simplify right side
    229,580.80x = 70,760,289,713.28
  5. Step 5: Solve for x
    x = 70,760,289,713.28/229,580.80
  6. Step 6: Final answer
    x = 308,215.19

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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.