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Finding the Fourth Proportional to 345,627.92, 517,690.20 and 167,760.56

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Solution

The fourth proportional to 345,627.92, 517,690.20 and 167,760.56 is: 251,275.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,627.92 : 517,690.20 = 167,760.56 : x
  2. Step 2: Convert to fraction form
    345,627.92/517,690.20 = 167,760.56/x
  3. Step 3: Cross multiply
    345,627.92x = 517,690.20 × 167,760.56
  4. Step 4: Simplify right side
    345,627.92x = 86,847,997,858.51
  5. Step 5: Solve for x
    x = 86,847,997,858.51/345,627.92
  6. Step 6: Final answer
    x = 251,275.99

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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.