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Finding the Fourth Proportional to 443,690.34, 665,269.13 and 203,503.37

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Solution

The fourth proportional to 443,690.34, 665,269.13 and 203,503.37 is: 305,132.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,690.34 : 665,269.13 = 203,503.37 : x
  2. Step 2: Convert to fraction form
    443,690.34/665,269.13 = 203,503.37/x
  3. Step 3: Cross multiply
    443,690.34x = 665,269.13 × 203,503.37
  4. Step 4: Simplify right side
    443,690.34x = 135,384,510,939.19
  5. Step 5: Solve for x
    x = 135,384,510,939.19/443,690.34
  6. Step 6: Final answer
    x = 305,132.88

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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.