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Finding the Fourth Proportional to 339,863.37, 509,761.99 and 103,208.10

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Solution

The fourth proportional to 339,863.37, 509,761.99 and 103,208.10 is: 154,802.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,863.37 : 509,761.99 = 103,208.10 : x
  2. Step 2: Convert to fraction form
    339,863.37/509,761.99 = 103,208.10/x
  3. Step 3: Cross multiply
    339,863.37x = 509,761.99 × 103,208.10
  4. Step 4: Simplify right side
    339,863.37x = 52,611,566,440.12
  5. Step 5: Solve for x
    x = 52,611,566,440.12/339,863.37
  6. Step 6: Final answer
    x = 154,802.11

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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.