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Finding the Fourth Proportional to 388,404.60, 582,606.90 and 122,246.70

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Solution

The fourth proportional to 388,404.60, 582,606.90 and 122,246.70 is: 183,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,404.60 : 582,606.90 = 122,246.70 : x
  2. Step 2: Convert to fraction form
    388,404.60/582,606.90 = 122,246.70/x
  3. Step 3: Cross multiply
    388,404.60x = 582,606.90 × 122,246.70
  4. Step 4: Simplify right side
    388,404.60x = 71,221,770,922.23
  5. Step 5: Solve for x
    x = 71,221,770,922.23/388,404.60
  6. Step 6: Final answer
    x = 183,370.05

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Similar ratio
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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.