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Finding the Fourth Proportional to 339,490.20, 509,345.86 and 161,974.26

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Solution

The fourth proportional to 339,490.20, 509,345.86 and 161,974.26 is: 243,014.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,490.20 : 509,345.86 = 161,974.26 : x
  2. Step 2: Convert to fraction form
    339,490.20/509,345.86 = 161,974.26/x
  3. Step 3: Cross multiply
    339,490.20x = 509,345.86 × 161,974.26
  4. Step 4: Simplify right side
    339,490.20x = 82,500,918,757.56
  5. Step 5: Solve for x
    x = 82,500,918,757.56/339,490.20
  6. Step 6: Final answer
    x = 243,014.14

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1.5x scale

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.