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Finding the Fourth Proportional to 443,340.65, 665,104.43 and 143,797.93

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Solution

The fourth proportional to 443,340.65, 665,104.43 and 143,797.93 is: 215,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,340.65 : 665,104.43 = 143,797.93 : x
  2. Step 2: Convert to fraction form
    443,340.65/665,104.43 = 143,797.93/x
  3. Step 3: Cross multiply
    443,340.65x = 665,104.43 × 143,797.93
  4. Step 4: Simplify right side
    443,340.65x = 95,640,638,964.56
  5. Step 5: Solve for x
    x = 95,640,638,964.56/443,340.65
  6. Step 6: Final answer
    x = 215,727.20

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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.