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Finding the Fourth Proportional to 172,235.80, 258,353.70 and 159,794.20

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Solution

The fourth proportional to 172,235.80, 258,353.70 and 159,794.20 is: 239,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,235.80 : 258,353.70 = 159,794.20 : x
  2. Step 2: Convert to fraction form
    172,235.80/258,353.70 = 159,794.20/x
  3. Step 3: Cross multiply
    172,235.80x = 258,353.70 × 159,794.20
  4. Step 4: Simplify right side
    172,235.80x = 41,283,422,808.54
  5. Step 5: Solve for x
    x = 41,283,422,808.54/172,235.80
  6. Step 6: Final answer
    x = 239,691.30

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1.5x scale

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.