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Finding the Fourth Proportional to 443,341.22, 665,105.28 and 143,798.49

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Solution

The fourth proportional to 443,341.22, 665,105.28 and 143,798.49 is: 215,728.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,341.22 : 665,105.28 = 143,798.49 : x
  2. Step 2: Convert to fraction form
    443,341.22/665,105.28 = 143,798.49/x
  3. Step 3: Cross multiply
    443,341.22x = 665,105.28 × 143,798.49
  4. Step 4: Simplify right side
    443,341.22x = 95,641,134,415.78
  5. Step 5: Solve for x
    x = 95,641,134,415.78/443,341.22
  6. Step 6: Final answer
    x = 215,728.05

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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.