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Finding the Fourth Proportional to 339,970.56, 508,697.99 and 205,112.85

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Solution

The fourth proportional to 339,970.56, 508,697.99 and 205,112.85 is: 306,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,970.56 : 508,697.99 = 205,112.85 : x
  2. Step 2: Convert to fraction form
    339,970.56/508,697.99 = 205,112.85/x
  3. Step 3: Cross multiply
    339,970.56x = 508,697.99 × 205,112.85
  4. Step 4: Simplify right side
    339,970.56x = 104,340,492,354.16
  5. Step 5: Solve for x
    x = 104,340,492,354.16/339,970.56
  6. Step 6: Final answer
    x = 306,910.38

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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.