Home / 305,979,940.80-422,239,999.68-166,747,713.12

Finding the Fourth Proportional to 305,979,940.80, 422,239,999.68 and 166,747,713.12

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Solution

The fourth proportional to 305,979,940.80, 422,239,999.68 and 166,747,713.12 is: 230,105,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,979,940.80 : 422,239,999.68 = 166,747,713.12 : x
  2. Step 2: Convert to fraction form
    305,979,940.80/422,239,999.68 = 166,747,713.12/x
  3. Step 3: Cross multiply
    305,979,940.80x = 422,239,999.68 × 166,747,713.12
  4. Step 4: Simplify right side
    305,979,940.80x = 70,407,554,334,429,536
  5. Step 5: Solve for x
    x = 70,407,554,334,429,536/305,979,940.80
  6. Step 6: Final answer
    x = 230,105,130.91

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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.