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Finding the Fourth Proportional to 231,628.56, 346,787.44 and 147,179.40

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Solution

The fourth proportional to 231,628.56, 346,787.44 and 147,179.40 is: 220,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,628.56 : 346,787.44 = 147,179.40 : x
  2. Step 2: Convert to fraction form
    231,628.56/346,787.44 = 147,179.40/x
  3. Step 3: Cross multiply
    231,628.56x = 346,787.44 × 147,179.40
  4. Step 4: Simplify right side
    231,628.56x = 51,039,967,346.74
  5. Step 5: Solve for x
    x = 51,039,967,346.74/231,628.56
  6. Step 6: Final answer
    x = 220,352.65

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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.