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Finding the Fourth Proportional to 339,863.61, 509,796.23 and 103,208.07

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Solution

The fourth proportional to 339,863.61, 509,796.23 and 103,208.07 is: 154,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,863.61 : 509,796.23 = 103,208.07 : x
  2. Step 2: Convert to fraction form
    339,863.61/509,796.23 = 103,208.07/x
  3. Step 3: Cross multiply
    339,863.61x = 509,796.23 × 103,208.07
  4. Step 4: Simplify right side
    339,863.61x = 52,615,084,475.54
  5. Step 5: Solve for x
    x = 52,615,084,475.54/339,863.61
  6. Step 6: Final answer
    x = 154,812.35

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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.