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Finding the Fourth Proportional to 355,691.79, 490,870.40 and 204,837.39

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Solution

The fourth proportional to 355,691.79, 490,870.40 and 204,837.39 is: 282,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,691.79 : 490,870.40 = 204,837.39 : x
  2. Step 2: Convert to fraction form
    355,691.79/490,870.40 = 204,837.39/x
  3. Step 3: Cross multiply
    355,691.79x = 490,870.40 × 204,837.39
  4. Step 4: Simplify right side
    355,691.79x = 100,548,610,540.07
  5. Step 5: Solve for x
    x = 100,548,610,540.07/355,691.79
  6. Step 6: Final answer
    x = 282,684.65

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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.