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Finding the Fourth Proportional to 339,003.20, 507,921.60 and 220,613.60

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Solution

The fourth proportional to 339,003.20, 507,921.60 and 220,613.60 is: 330,540.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,003.20 : 507,921.60 = 220,613.60 : x
  2. Step 2: Convert to fraction form
    339,003.20/507,921.60 = 220,613.60/x
  3. Step 3: Cross multiply
    339,003.20x = 507,921.60 × 220,613.60
  4. Step 4: Simplify right side
    339,003.20x = 112,054,412,693.76
  5. Step 5: Solve for x
    x = 112,054,412,693.76/339,003.20
  6. Step 6: Final answer
    x = 330,540.87

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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.