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Finding the Fourth Proportional to 331,415.84, 457,359.20 and 188,179.76

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Solution

The fourth proportional to 331,415.84, 457,359.20 and 188,179.76 is: 259,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,415.84 : 457,359.20 = 188,179.76 : x
  2. Step 2: Convert to fraction form
    331,415.84/457,359.20 = 188,179.76/x
  3. Step 3: Cross multiply
    331,415.84x = 457,359.20 × 188,179.76
  4. Step 4: Simplify right side
    331,415.84x = 86,065,741,262.10
  5. Step 5: Solve for x
    x = 86,065,741,262.10/331,415.84
  6. Step 6: Final answer
    x = 259,691.10

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1.5x scale

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.