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Finding the Fourth Proportional to 404,709.66, 558,996.06 and 303,189.12

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Solution

The fourth proportional to 404,709.66, 558,996.06 and 303,189.12 is: 418,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,709.66 : 558,996.06 = 303,189.12 : x
  2. Step 2: Convert to fraction form
    404,709.66/558,996.06 = 303,189.12/x
  3. Step 3: Cross multiply
    404,709.66x = 558,996.06 × 303,189.12
  4. Step 4: Simplify right side
    404,709.66x = 169,481,523,514.87
  5. Step 5: Solve for x
    x = 169,481,523,514.87/404,709.66
  6. Step 6: Final answer
    x = 418,773.11

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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.