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Finding the Fourth Proportional to 172,198.32, 258,312.36 and 47,539.32

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Solution

The fourth proportional to 172,198.32, 258,312.36 and 47,539.32 is: 71,313.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,198.32 : 258,312.36 = 47,539.32 : x
  2. Step 2: Convert to fraction form
    172,198.32/258,312.36 = 47,539.32/x
  3. Step 3: Cross multiply
    172,198.32x = 258,312.36 × 47,539.32
  4. Step 4: Simplify right side
    172,198.32x = 12,279,993,942.00
  5. Step 5: Solve for x
    x = 12,279,993,942.00/172,198.32
  6. Step 6: Final answer
    x = 71,313.09

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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.