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Finding the Fourth Proportional to 443,689.85, 665,268.20 and 173,496.12

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Solution

The fourth proportional to 443,689.85, 665,268.20 and 173,496.12 is: 260,139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,689.85 : 665,268.20 = 173,496.12 : x
  2. Step 2: Convert to fraction form
    443,689.85/665,268.20 = 173,496.12/x
  3. Step 3: Cross multiply
    443,689.85x = 665,268.20 × 173,496.12
  4. Step 4: Simplify right side
    443,689.85x = 115,421,450,591.90
  5. Step 5: Solve for x
    x = 115,421,450,591.90/443,689.85
  6. Step 6: Final answer
    x = 260,139.94

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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.