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Finding the Fourth Proportional to 221,201.63, 331,803.65 and 54,989.63

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Solution

The fourth proportional to 221,201.63, 331,803.65 and 54,989.63 is: 82,484.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,201.63 : 331,803.65 = 54,989.63 : x
  2. Step 2: Convert to fraction form
    221,201.63/331,803.65 = 54,989.63/x
  3. Step 3: Cross multiply
    221,201.63x = 331,803.65 × 54,989.63
  4. Step 4: Simplify right side
    221,201.63x = 18,245,758,424.61
  5. Step 5: Solve for x
    x = 18,245,758,424.61/221,201.63
  6. Step 6: Final answer
    x = 82,484.74

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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.