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Finding the Fourth Proportional to 443,404.80, 665,107.20 and 310,435.20

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Solution

The fourth proportional to 443,404.80, 665,107.20 and 310,435.20 is: 465,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,404.80 : 665,107.20 = 310,435.20 : x
  2. Step 2: Convert to fraction form
    443,404.80/665,107.20 = 310,435.20/x
  3. Step 3: Cross multiply
    443,404.80x = 665,107.20 × 310,435.20
  4. Step 4: Simplify right side
    443,404.80x = 206,472,686,653.44
  5. Step 5: Solve for x
    x = 206,472,686,653.44/443,404.80
  6. Step 6: Final answer
    x = 465,652.80

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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.