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Finding the Fourth Proportional to 363,789.93, 502,029.18 and 202,643.28

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Solution

The fourth proportional to 363,789.93, 502,029.18 and 202,643.28 is: 279,647.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,789.93 : 502,029.18 = 202,643.28 : x
  2. Step 2: Convert to fraction form
    363,789.93/502,029.18 = 202,643.28/x
  3. Step 3: Cross multiply
    363,789.93x = 502,029.18 × 202,643.28
  4. Step 4: Simplify right side
    363,789.93x = 101,732,839,690.91
  5. Step 5: Solve for x
    x = 101,732,839,690.91/363,789.93
  6. Step 6: Final answer
    x = 279,647.21

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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.