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Finding the Fourth Proportional to 352,456.52, 486,390.52 and 201,556.76

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Solution

The fourth proportional to 352,456.52, 486,390.52 and 201,556.76 is: 278,148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,456.52 : 486,390.52 = 201,556.76 : x
  2. Step 2: Convert to fraction form
    352,456.52/486,390.52 = 201,556.76/x
  3. Step 3: Cross multiply
    352,456.52x = 486,390.52 × 201,556.76
  4. Step 4: Simplify right side
    352,456.52x = 98,035,297,305.92
  5. Step 5: Solve for x
    x = 98,035,297,305.92/352,456.52
  6. Step 6: Final answer
    x = 278,148.63

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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.