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Finding the Fourth Proportional to 345,847.72, 518,825.22 and 146,168.95

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Solution

The fourth proportional to 345,847.72, 518,825.22 and 146,168.95 is: 219,276.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,847.72 : 518,825.22 = 146,168.95 : x
  2. Step 2: Convert to fraction form
    345,847.72/518,825.22 = 146,168.95/x
  3. Step 3: Cross multiply
    345,847.72x = 518,825.22 × 146,168.95
  4. Step 4: Simplify right side
    345,847.72x = 75,836,134,315.95
  5. Step 5: Solve for x
    x = 75,836,134,315.95/345,847.72
  6. Step 6: Final answer
    x = 219,276.09

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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.