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Finding the Fourth Proportional to 275,332.60, 379,952.90 and 154,471.72

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Solution

The fourth proportional to 275,332.60, 379,952.90 and 154,471.72 is: 213,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,332.60 : 379,952.90 = 154,471.72 : x
  2. Step 2: Convert to fraction form
    275,332.60/379,952.90 = 154,471.72/x
  3. Step 3: Cross multiply
    275,332.60x = 379,952.90 × 154,471.72
  4. Step 4: Simplify right side
    275,332.60x = 58,691,977,981.99
  5. Step 5: Solve for x
    x = 58,691,977,981.99/275,332.60
  6. Step 6: Final answer
    x = 213,167.56

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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.