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Finding the Fourth Proportional to 399,310.49, 550,983.47 and 235,944.27

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Solution

The fourth proportional to 399,310.49, 550,983.47 and 235,944.27 is: 325,564.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,310.49 : 550,983.47 = 235,944.27 : x
  2. Step 2: Convert to fraction form
    399,310.49/550,983.47 = 235,944.27/x
  3. Step 3: Cross multiply
    399,310.49x = 550,983.47 × 235,944.27
  4. Step 4: Simplify right side
    399,310.49x = 130,001,391,431.50
  5. Step 5: Solve for x
    x = 130,001,391,431.50/399,310.49
  6. Step 6: Final answer
    x = 325,564.68

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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.