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Finding the Fourth Proportional to 404,500,990.88, 558,207,393.36 and 218,857,933.28

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Solution

The fourth proportional to 404,500,990.88, 558,207,393.36 and 218,857,933.28 is: 302,021,797.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,500,990.88 : 558,207,393.36 = 218,857,933.28 : x
  2. Step 2: Convert to fraction form
    404,500,990.88/558,207,393.36 = 218,857,933.28/x
  3. Step 3: Cross multiply
    404,500,990.88x = 558,207,393.36 × 218,857,933.28
  4. Step 4: Simplify right side
    404,500,990.88x = 122,168,116,452,385,600
  5. Step 5: Solve for x
    x = 122,168,116,452,385,600/404,500,990.88
  6. Step 6: Final answer
    x = 302,021,797.74

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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.