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Finding the Fourth Proportional to 317,222.64, 437,770.62 and 172,028.71

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Solution

The fourth proportional to 317,222.64, 437,770.62 and 172,028.71 is: 237,401.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,222.64 : 437,770.62 = 172,028.71 : x
  2. Step 2: Convert to fraction form
    317,222.64/437,770.62 = 172,028.71/x
  3. Step 3: Cross multiply
    317,222.64x = 437,770.62 × 172,028.71
  4. Step 4: Simplify right side
    317,222.64x = 75,309,113,294.97
  5. Step 5: Solve for x
    x = 75,309,113,294.97/317,222.64
  6. Step 6: Final answer
    x = 237,401.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.