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Finding the Fourth Proportional to 492,709.60, 739,064.40 and 137,723.05

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Solution

The fourth proportional to 492,709.60, 739,064.40 and 137,723.05 is: 206,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,709.60 : 739,064.40 = 137,723.05 : x
  2. Step 2: Convert to fraction form
    492,709.60/739,064.40 = 137,723.05/x
  3. Step 3: Cross multiply
    492,709.60x = 739,064.40 × 137,723.05
  4. Step 4: Simplify right side
    492,709.60x = 101,786,203,314.42
  5. Step 5: Solve for x
    x = 101,786,203,314.42/492,709.60
  6. Step 6: Final answer
    x = 206,584.58

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Similar ratio
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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.