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Finding the Fourth Proportional to 221,111.80, 331,473.30 and 132,400.60

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Solution

The fourth proportional to 221,111.80, 331,473.30 and 132,400.60 is: 198,484.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,111.80 : 331,473.30 = 132,400.60 : x
  2. Step 2: Convert to fraction form
    221,111.80/331,473.30 = 132,400.60/x
  3. Step 3: Cross multiply
    221,111.80x = 331,473.30 × 132,400.60
  4. Step 4: Simplify right side
    221,111.80x = 43,887,263,803.98
  5. Step 5: Solve for x
    x = 43,887,263,803.98/221,111.80
  6. Step 6: Final answer
    x = 198,484.49

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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.