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Finding the Fourth Proportional to 404,756,062.80, 558,563,553.80 and 219,117,078.68

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Solution

The fourth proportional to 404,756,062.80, 558,563,553.80 and 219,117,078.68 is: 302,381,669.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,756,062.80 : 558,563,553.80 = 219,117,078.68 : x
  2. Step 2: Convert to fraction form
    404,756,062.80/558,563,553.80 = 219,117,078.68/x
  3. Step 3: Cross multiply
    404,756,062.80x = 558,563,553.80 × 219,117,078.68
  4. Step 4: Simplify right side
    404,756,062.80x = 122,390,814,165,775,008
  5. Step 5: Solve for x
    x = 122,390,814,165,775,008/404,756,062.80
  6. Step 6: Final answer
    x = 302,381,669.89

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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.