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Finding the Fourth Proportional to 172,822.20, 259,233.30 and 164,657.40

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Solution

The fourth proportional to 172,822.20, 259,233.30 and 164,657.40 is: 246,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,822.20 : 259,233.30 = 164,657.40 : x
  2. Step 2: Convert to fraction form
    172,822.20/259,233.30 = 164,657.40/x
  3. Step 3: Cross multiply
    172,822.20x = 259,233.30 × 164,657.40
  4. Step 4: Simplify right side
    172,822.20x = 42,684,681,171.42
  5. Step 5: Solve for x
    x = 42,684,681,171.42/172,822.20
  6. Step 6: Final answer
    x = 246,986.10

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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.