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Finding the Fourth Proportional to 443,451.21, 665,342.04 and 266,085.51

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Solution

The fourth proportional to 443,451.21, 665,342.04 and 266,085.51 is: 399,227.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,451.21 : 665,342.04 = 266,085.51 : x
  2. Step 2: Convert to fraction form
    443,451.21/665,342.04 = 266,085.51/x
  3. Step 3: Cross multiply
    443,451.21x = 665,342.04 × 266,085.51
  4. Step 4: Simplify right side
    443,451.21x = 177,037,876,037.84
  5. Step 5: Solve for x
    x = 177,037,876,037.84/443,451.21
  6. Step 6: Final answer
    x = 399,227.41

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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.