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Finding the Fourth Proportional to 443,369.20, 611,630.26 and 261,993.37

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Solution

The fourth proportional to 443,369.20, 611,630.26 and 261,993.37 is: 361,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,369.20 : 611,630.26 = 261,993.37 : x
  2. Step 2: Convert to fraction form
    443,369.20/611,630.26 = 261,993.37/x
  3. Step 3: Cross multiply
    443,369.20x = 611,630.26 × 261,993.37
  4. Step 4: Simplify right side
    443,369.20x = 160,243,073,011.38
  5. Step 5: Solve for x
    x = 160,243,073,011.38/443,369.20
  6. Step 6: Final answer
    x = 361,421.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.