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Finding the Fourth Proportional to 490,405.60, 735,608.40 and 194,917.60

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Solution

The fourth proportional to 490,405.60, 735,608.40 and 194,917.60 is: 292,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,405.60 : 735,608.40 = 194,917.60 : x
  2. Step 2: Convert to fraction form
    490,405.60/735,608.40 = 194,917.60/x
  3. Step 3: Cross multiply
    490,405.60x = 735,608.40 × 194,917.60
  4. Step 4: Simplify right side
    490,405.60x = 143,383,023,867.84
  5. Step 5: Solve for x
    x = 143,383,023,867.84/490,405.60
  6. Step 6: Final answer
    x = 292,376.40

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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.