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Finding the Fourth Proportional to 452,830.60, 679,245.90 and 203,998.60

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Solution

The fourth proportional to 452,830.60, 679,245.90 and 203,998.60 is: 305,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,830.60 : 679,245.90 = 203,998.60 : x
  2. Step 2: Convert to fraction form
    452,830.60/679,245.90 = 203,998.60/x
  3. Step 3: Cross multiply
    452,830.60x = 679,245.90 × 203,998.60
  4. Step 4: Simplify right side
    452,830.60x = 138,565,212,655.74
  5. Step 5: Solve for x
    x = 138,565,212,655.74/452,830.60
  6. Step 6: Final answer
    x = 305,997.90

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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.