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Finding the Fourth Proportional to 221,900.92, 306,199.65 and 131,260.30

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Solution

The fourth proportional to 221,900.92, 306,199.65 and 131,260.30 is: 181,125.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,900.92 : 306,199.65 = 131,260.30 : x
  2. Step 2: Convert to fraction form
    221,900.92/306,199.65 = 131,260.30/x
  3. Step 3: Cross multiply
    221,900.92x = 306,199.65 × 131,260.30
  4. Step 4: Simplify right side
    221,900.92x = 40,191,857,918.90
  5. Step 5: Solve for x
    x = 40,191,857,918.90/221,900.92
  6. Step 6: Final answer
    x = 181,125.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.