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Finding the Fourth Proportional to 443,276.88, 665,008.74 and 143,734.12

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Solution

The fourth proportional to 443,276.88, 665,008.74 and 143,734.12 is: 215,631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,276.88 : 665,008.74 = 143,734.12 : x
  2. Step 2: Convert to fraction form
    443,276.88/665,008.74 = 143,734.12/x
  3. Step 3: Cross multiply
    443,276.88x = 665,008.74 × 143,734.12
  4. Step 4: Simplify right side
    443,276.88x = 95,584,446,036.21
  5. Step 5: Solve for x
    x = 95,584,446,036.21/443,276.88
  6. Step 6: Final answer
    x = 215,631.47

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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.