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Finding the Fourth Proportional to 356,351.88, 491,773.56 and 203,387.04

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Solution

The fourth proportional to 356,351.88, 491,773.56 and 203,387.04 is: 280,678.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,351.88 : 491,773.56 = 203,387.04 : x
  2. Step 2: Convert to fraction form
    356,351.88/491,773.56 = 203,387.04/x
  3. Step 3: Cross multiply
    356,351.88x = 491,773.56 × 203,387.04
  4. Step 4: Simplify right side
    356,351.88x = 100,020,368,718.66
  5. Step 5: Solve for x
    x = 100,020,368,718.66/356,351.88
  6. Step 6: Final answer
    x = 280,678.66

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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.