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Finding the Fourth Proportional to 443,448.82, 665,338.50 and 266,083.12

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Solution

The fourth proportional to 443,448.82, 665,338.50 and 266,083.12 is: 399,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,448.82 : 665,338.50 = 266,083.12 : x
  2. Step 2: Convert to fraction form
    443,448.82/665,338.50 = 266,083.12/x
  3. Step 3: Cross multiply
    443,448.82x = 665,338.50 × 266,083.12
  4. Step 4: Simplify right side
    443,448.82x = 177,035,343,936.12
  5. Step 5: Solve for x
    x = 177,035,343,936.12/443,448.82
  6. Step 6: Final answer
    x = 399,223.85

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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.