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Finding the Fourth Proportional to 443,359.62, 665,132.84 and 143,816.81

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Solution

The fourth proportional to 443,359.62, 665,132.84 and 143,816.81 is: 215,755.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,359.62 : 665,132.84 = 143,816.81 : x
  2. Step 2: Convert to fraction form
    443,359.62/665,132.84 = 143,816.81/x
  3. Step 3: Cross multiply
    443,359.62x = 665,132.84 × 143,816.81
  4. Step 4: Simplify right side
    443,359.62x = 95,657,284,578.33
  5. Step 5: Solve for x
    x = 95,657,284,578.33/443,359.62
  6. Step 6: Final answer
    x = 215,755.52

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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.