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Finding the Fourth Proportional to 443,489.22, 665,224.43 and 143,969.36

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Solution

The fourth proportional to 443,489.22, 665,224.43 and 143,969.36 is: 215,950.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,489.22 : 665,224.43 = 143,969.36 : x
  2. Step 2: Convert to fraction form
    443,489.22/665,224.43 = 143,969.36/x
  3. Step 3: Cross multiply
    443,489.22x = 665,224.43 × 143,969.36
  4. Step 4: Simplify right side
    443,489.22x = 95,771,931,397.50
  5. Step 5: Solve for x
    x = 95,771,931,397.50/443,489.22
  6. Step 6: Final answer
    x = 215,950.98

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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.