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Finding the Fourth Proportional to 352,687.47, 528,864.55 and 136,647.41

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Solution

The fourth proportional to 352,687.47, 528,864.55 and 136,647.41 is: 204,906.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,687.47 : 528,864.55 = 136,647.41 : x
  2. Step 2: Convert to fraction form
    352,687.47/528,864.55 = 136,647.41/x
  3. Step 3: Cross multiply
    352,687.47x = 528,864.55 × 136,647.41
  4. Step 4: Simplify right side
    352,687.47x = 72,267,967,676.09
  5. Step 5: Solve for x
    x = 72,267,967,676.09/352,687.47
  6. Step 6: Final answer
    x = 204,906.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.