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Finding the Fourth Proportional to 443,452.21, 665,343.54 and 266,086.51

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Solution

The fourth proportional to 443,452.21, 665,343.54 and 266,086.51 is: 399,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,452.21 : 665,343.54 = 266,086.51 : x
  2. Step 2: Convert to fraction form
    443,452.21/665,343.54 = 266,086.51/x
  3. Step 3: Cross multiply
    443,452.21x = 665,343.54 × 266,086.51
  4. Step 4: Simplify right side
    443,452.21x = 177,038,940,509.65
  5. Step 5: Solve for x
    x = 177,038,940,509.65/443,452.21
  6. Step 6: Final answer
    x = 399,228.91

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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.