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Finding the Fourth Proportional to 363,991.12, 502,345.31 and 218,844.38

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Solution

The fourth proportional to 363,991.12, 502,345.31 and 218,844.38 is: 302,027.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,991.12 : 502,345.31 = 218,844.38 : x
  2. Step 2: Convert to fraction form
    363,991.12/502,345.31 = 218,844.38/x
  3. Step 3: Cross multiply
    363,991.12x = 502,345.31 × 218,844.38
  4. Step 4: Simplify right side
    363,991.12x = 109,935,448,074.50
  5. Step 5: Solve for x
    x = 109,935,448,074.50/363,991.12
  6. Step 6: Final answer
    x = 302,027.83

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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.