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Finding the Fourth Proportional to 339,691.59, 509,539.21 and 103,034.50

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Solution

The fourth proportional to 339,691.59, 509,539.21 and 103,034.50 is: 154,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,691.59 : 509,539.21 = 103,034.50 : x
  2. Step 2: Convert to fraction form
    339,691.59/509,539.21 = 103,034.50/x
  3. Step 3: Cross multiply
    339,691.59x = 509,539.21 × 103,034.50
  4. Step 4: Simplify right side
    339,691.59x = 52,500,116,201.31
  5. Step 5: Solve for x
    x = 52,500,116,201.31/339,691.59
  6. Step 6: Final answer
    x = 154,552.30

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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.