Home / 221,311.36-331,966.86-81,080.92

Finding the Fourth Proportional to 221,311.36, 331,966.86 and 81,080.92

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Solution

The fourth proportional to 221,311.36, 331,966.86 and 81,080.92 is: 121,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,311.36 : 331,966.86 = 81,080.92 : x
  2. Step 2: Convert to fraction form
    221,311.36/331,966.86 = 81,080.92/x
  3. Step 3: Cross multiply
    221,311.36x = 331,966.86 × 81,080.92
  4. Step 4: Simplify right side
    221,311.36x = 26,916,178,418.31
  5. Step 5: Solve for x
    x = 26,916,178,418.31/221,311.36
  6. Step 6: Final answer
    x = 121,621.31

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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.