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Finding the Fourth Proportional to 528,160.91, 728,850.82 and 298,687.97

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Solution

The fourth proportional to 528,160.91, 728,850.82 and 298,687.97 is: 412,183.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,160.91 : 728,850.82 = 298,687.97 : x
  2. Step 2: Convert to fraction form
    528,160.91/728,850.82 = 298,687.97/x
  3. Step 3: Cross multiply
    528,160.91x = 728,850.82 × 298,687.97
  4. Step 4: Simplify right side
    528,160.91x = 217,698,966,720.94
  5. Step 5: Solve for x
    x = 217,698,966,720.94/528,160.91
  6. Step 6: Final answer
    x = 412,183.03

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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.