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Finding the Fourth Proportional to 353,369.22, 487,640.79 and 202,456.50

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Solution

The fourth proportional to 353,369.22, 487,640.79 and 202,456.50 is: 279,384.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,369.22 : 487,640.79 = 202,456.50 : x
  2. Step 2: Convert to fraction form
    353,369.22/487,640.79 = 202,456.50/x
  3. Step 3: Cross multiply
    353,369.22x = 487,640.79 × 202,456.50
  4. Step 4: Simplify right side
    353,369.22x = 98,726,047,600.64
  5. Step 5: Solve for x
    x = 98,726,047,600.64/353,369.22
  6. Step 6: Final answer
    x = 279,384.97

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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.