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Finding the Fourth Proportional to 404,591,965.88, 558,338,672.23 and 218,952,997.97

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Solution

The fourth proportional to 404,591,965.88, 558,338,672.23 and 218,952,997.97 is: 302,156,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,591,965.88 : 558,338,672.23 = 218,952,997.97 : x
  2. Step 2: Convert to fraction form
    404,591,965.88/558,338,672.23 = 218,952,997.97/x
  3. Step 3: Cross multiply
    404,591,965.88x = 558,338,672.23 × 218,952,997.97
  4. Step 4: Simplify right side
    404,591,965.88x = 122,249,926,164,004,240
  5. Step 5: Solve for x
    x = 122,249,926,164,004,240/404,591,965.88
  6. Step 6: Final answer
    x = 302,156,089.28

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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.