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Finding the Fourth Proportional to 443,849, 665,941.20 and 266,479.76

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Solution

The fourth proportional to 443,849, 665,941.20 and 266,479.76 is: 399,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,849 : 665,941.20 = 266,479.76 : x
  2. Step 2: Convert to fraction form
    443,849/665,941.20 = 266,479.76/x
  3. Step 3: Cross multiply
    443,849x = 665,941.20 × 266,479.76
  4. Step 4: Simplify right side
    443,849x = 177,459,851,150.11
  5. Step 5: Solve for x
    x = 177,459,851,150.11/443,849
  6. Step 6: Final answer
    x = 399,820.32

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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.