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Finding the Fourth Proportional to 272,647.60, 408,922.80 and 172,628.80

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Solution

The fourth proportional to 272,647.60, 408,922.80 and 172,628.80 is: 258,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,647.60 : 408,922.80 = 172,628.80 : x
  2. Step 2: Convert to fraction form
    272,647.60/408,922.80 = 172,628.80/x
  3. Step 3: Cross multiply
    272,647.60x = 408,922.80 × 172,628.80
  4. Step 4: Simplify right side
    272,647.60x = 70,591,852,256.64
  5. Step 5: Solve for x
    x = 70,591,852,256.64/272,647.60
  6. Step 6: Final answer
    x = 258,912.43

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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.