Home / 221,015.39-331,621.09-115,809.35

Finding the Fourth Proportional to 221,015.39, 331,621.09 and 115,809.35

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Solution

The fourth proportional to 221,015.39, 331,621.09 and 115,809.35 is: 173,765.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,015.39 : 331,621.09 = 115,809.35 : x
  2. Step 2: Convert to fraction form
    221,015.39/331,621.09 = 115,809.35/x
  3. Step 3: Cross multiply
    221,015.39x = 331,621.09 × 115,809.35
  4. Step 4: Simplify right side
    221,015.39x = 38,404,820,931.56
  5. Step 5: Solve for x
    x = 38,404,820,931.56/221,015.39
  6. Step 6: Final answer
    x = 173,765.37

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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.