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Finding the Fourth Proportional to 275,298.76, 379,941.06 and 154,472.68

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Solution

The fourth proportional to 275,298.76, 379,941.06 and 154,472.68 is: 213,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,298.76 : 379,941.06 = 154,472.68 : x
  2. Step 2: Convert to fraction form
    275,298.76/379,941.06 = 154,472.68/x
  3. Step 3: Cross multiply
    275,298.76x = 379,941.06 × 154,472.68
  4. Step 4: Simplify right side
    275,298.76x = 58,690,513,780.24
  5. Step 5: Solve for x
    x = 58,690,513,780.24/275,298.76
  6. Step 6: Final answer
    x = 213,188.44

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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.