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Finding the Fourth Proportional to 339,365.87, 508,460.80 and 205,966.61

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Solution

The fourth proportional to 339,365.87, 508,460.80 and 205,966.61 is: 308,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,365.87 : 508,460.80 = 205,966.61 : x
  2. Step 2: Convert to fraction form
    339,365.87/508,460.80 = 205,966.61/x
  3. Step 3: Cross multiply
    339,365.87x = 508,460.80 × 205,966.61
  4. Step 4: Simplify right side
    339,365.87x = 104,725,947,293.89
  5. Step 5: Solve for x
    x = 104,725,947,293.89/339,365.87
  6. Step 6: Final answer
    x = 308,593.05

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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.