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Finding the Fourth Proportional to 221,125.80, 331,323.90 and 127,468.20

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Solution

The fourth proportional to 221,125.80, 331,323.90 and 127,468.20 is: 190,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,125.80 : 331,323.90 = 127,468.20 : x
  2. Step 2: Convert to fraction form
    221,125.80/331,323.90 = 127,468.20/x
  3. Step 3: Cross multiply
    221,125.80x = 331,323.90 × 127,468.20
  4. Step 4: Simplify right side
    221,125.80x = 42,233,261,149.98
  5. Step 5: Solve for x
    x = 42,233,261,149.98/221,125.80
  6. Step 6: Final answer
    x = 190,992.01

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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.