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Finding the Fourth Proportional to 339,951.66, 469,049.31 and 212,563.50

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Solution

The fourth proportional to 339,951.66, 469,049.31 and 212,563.50 is: 293,285.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,951.66 : 469,049.31 = 212,563.50 : x
  2. Step 2: Convert to fraction form
    339,951.66/469,049.31 = 212,563.50/x
  3. Step 3: Cross multiply
    339,951.66x = 469,049.31 × 212,563.50
  4. Step 4: Simplify right side
    339,951.66x = 99,702,763,006.19
  5. Step 5: Solve for x
    x = 99,702,763,006.19/339,951.66
  6. Step 6: Final answer
    x = 293,285.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.