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Finding the Fourth Proportional to 339,997.64, 509,529.90 and 215,115.08

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Solution

The fourth proportional to 339,997.64, 509,529.90 and 215,115.08 is: 322,377.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,997.64 : 509,529.90 = 215,115.08 : x
  2. Step 2: Convert to fraction form
    339,997.64/509,529.90 = 215,115.08/x
  3. Step 3: Cross multiply
    339,997.64x = 509,529.90 × 215,115.08
  4. Step 4: Simplify right side
    339,997.64x = 109,607,565,200.89
  5. Step 5: Solve for x
    x = 109,607,565,200.89/339,997.64
  6. Step 6: Final answer
    x = 322,377.43

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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.