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Finding the Fourth Proportional to 253,591.34, 380,424.10 and 76,112.38

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Solution

The fourth proportional to 253,591.34, 380,424.10 and 76,112.38 is: 114,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,591.34 : 380,424.10 = 76,112.38 : x
  2. Step 2: Convert to fraction form
    253,591.34/380,424.10 = 76,112.38/x
  3. Step 3: Cross multiply
    253,591.34x = 380,424.10 × 76,112.38
  4. Step 4: Simplify right side
    253,591.34x = 28,954,983,660.36
  5. Step 5: Solve for x
    x = 28,954,983,660.36/253,591.34
  6. Step 6: Final answer
    x = 114,179.70

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1.5x scale

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.