Home / 339,947.90-509,905.65-115,286.30

Finding the Fourth Proportional to 339,947.90, 509,905.65 and 115,286.30

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Solution

The fourth proportional to 339,947.90, 509,905.65 and 115,286.30 is: 172,923.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,947.90 : 509,905.65 = 115,286.30 : x
  2. Step 2: Convert to fraction form
    339,947.90/509,905.65 = 115,286.30/x
  3. Step 3: Cross multiply
    339,947.90x = 509,905.65 × 115,286.30
  4. Step 4: Simplify right side
    339,947.90x = 58,785,135,737.60
  5. Step 5: Solve for x
    x = 58,785,135,737.60/339,947.90
  6. Step 6: Final answer
    x = 172,923.96

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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.