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Finding the Fourth Proportional to 458,992.80, 688,489.20 and 222,796.80

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Solution

The fourth proportional to 458,992.80, 688,489.20 and 222,796.80 is: 334,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,992.80 : 688,489.20 = 222,796.80 : x
  2. Step 2: Convert to fraction form
    458,992.80/688,489.20 = 222,796.80/x
  3. Step 3: Cross multiply
    458,992.80x = 688,489.20 × 222,796.80
  4. Step 4: Simplify right side
    458,992.80x = 153,393,190,594.56
  5. Step 5: Solve for x
    x = 153,393,190,594.56/458,992.80
  6. Step 6: Final answer
    x = 334,195.20

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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.