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Finding the Fourth Proportional to 443,755.08, 665,501.22 and 128,214.84

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Solution

The fourth proportional to 443,755.08, 665,501.22 and 128,214.84 is: 192,284.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,755.08 : 665,501.22 = 128,214.84 : x
  2. Step 2: Convert to fraction form
    443,755.08/665,501.22 = 128,214.84/x
  3. Step 3: Cross multiply
    443,755.08x = 665,501.22 × 128,214.84
  4. Step 4: Simplify right side
    443,755.08x = 85,327,132,442.10
  5. Step 5: Solve for x
    x = 85,327,132,442.10/443,755.08
  6. Step 6: Final answer
    x = 192,284.29

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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.