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Finding the Fourth Proportional to 172,279.80, 257,982.30 and 164,406.60

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Solution

The fourth proportional to 172,279.80, 257,982.30 and 164,406.60 is: 246,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,279.80 : 257,982.30 = 164,406.60 : x
  2. Step 2: Convert to fraction form
    172,279.80/257,982.30 = 164,406.60/x
  3. Step 3: Cross multiply
    172,279.80x = 257,982.30 × 164,406.60
  4. Step 4: Simplify right side
    172,279.80x = 42,413,992,803.18
  5. Step 5: Solve for x
    x = 42,413,992,803.18/172,279.80
  6. Step 6: Final answer
    x = 246,192.49

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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.