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Finding the Fourth Proportional to 399,999.60, 599,999.40 and 250,408.80

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Solution

The fourth proportional to 399,999.60, 599,999.40 and 250,408.80 is: 375,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,999.60 : 599,999.40 = 250,408.80 : x
  2. Step 2: Convert to fraction form
    399,999.60/599,999.40 = 250,408.80/x
  3. Step 3: Cross multiply
    399,999.60x = 599,999.40 × 250,408.80
  4. Step 4: Simplify right side
    399,999.60x = 150,245,129,754.72
  5. Step 5: Solve for x
    x = 150,245,129,754.72/399,999.60
  6. Step 6: Final answer
    x = 375,613.20

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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.