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Finding the Fourth Proportional to 339,765.35, 509,635.05 and 103,098.47

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Solution

The fourth proportional to 339,765.35, 509,635.05 and 103,098.47 is: 154,643.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,765.35 : 509,635.05 = 103,098.47 : x
  2. Step 2: Convert to fraction form
    339,765.35/509,635.05 = 103,098.47/x
  3. Step 3: Cross multiply
    339,765.35x = 509,635.05 × 103,098.47
  4. Step 4: Simplify right side
    339,765.35x = 52,542,593,913.37
  5. Step 5: Solve for x
    x = 52,542,593,913.37/339,765.35
  6. Step 6: Final answer
    x = 154,643.77

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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.