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Finding the Fourth Proportional to 393,866.89, 590,592.98 and 269,243.53

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Solution

The fourth proportional to 393,866.89, 590,592.98 and 269,243.53 is: 403,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,866.89 : 590,592.98 = 269,243.53 : x
  2. Step 2: Convert to fraction form
    393,866.89/590,592.98 = 269,243.53/x
  3. Step 3: Cross multiply
    393,866.89x = 590,592.98 × 269,243.53
  4. Step 4: Simplify right side
    393,866.89x = 159,013,337,382.20
  5. Step 5: Solve for x
    x = 159,013,337,382.20/393,866.89
  6. Step 6: Final answer
    x = 403,723.55

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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.