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Finding the Fourth Proportional to 339,447.31, 509,195.57 and 102,808.44

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Solution

The fourth proportional to 339,447.31, 509,195.57 and 102,808.44 is: 154,220.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,447.31 : 509,195.57 = 102,808.44 : x
  2. Step 2: Convert to fraction form
    339,447.31/509,195.57 = 102,808.44/x
  3. Step 3: Cross multiply
    339,447.31x = 509,195.57 × 102,808.44
  4. Step 4: Simplify right side
    339,447.31x = 52,349,601,692.57
  5. Step 5: Solve for x
    x = 52,349,601,692.57/339,447.31
  6. Step 6: Final answer
    x = 154,220.11

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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.