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Finding the Fourth Proportional to 352,594.78, 486,580.80 and 201,691.78

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Solution

The fourth proportional to 352,594.78, 486,580.80 and 201,691.78 is: 278,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,594.78 : 486,580.80 = 201,691.78 : x
  2. Step 2: Convert to fraction form
    352,594.78/486,580.80 = 201,691.78/x
  3. Step 3: Cross multiply
    352,594.78x = 486,580.80 × 201,691.78
  4. Step 4: Simplify right side
    352,594.78x = 98,139,347,665.82
  5. Step 5: Solve for x
    x = 98,139,347,665.82/352,594.78
  6. Step 6: Final answer
    x = 278,334.66

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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.