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Finding the Fourth Proportional to 443,348.05, 665,119.28 and 143,777.65

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Solution

The fourth proportional to 443,348.05, 665,119.28 and 143,777.65 is: 215,698.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,348.05 : 665,119.28 = 143,777.65 : x
  2. Step 2: Convert to fraction form
    443,348.05/665,119.28 = 143,777.65/x
  3. Step 3: Cross multiply
    443,348.05x = 665,119.28 × 143,777.65
  4. Step 4: Simplify right side
    443,348.05x = 95,629,286,329.20
  5. Step 5: Solve for x
    x = 95,629,286,329.20/443,348.05
  6. Step 6: Final answer
    x = 215,698.00

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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.