Home / 221,223.13-305,288.52-120,621.13

Finding the Fourth Proportional to 221,223.13, 305,288.52 and 120,621.13

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Solution

The fourth proportional to 221,223.13, 305,288.52 and 120,621.13 is: 166,457.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,223.13 : 305,288.52 = 120,621.13 : x
  2. Step 2: Convert to fraction form
    221,223.13/305,288.52 = 120,621.13/x
  3. Step 3: Cross multiply
    221,223.13x = 305,288.52 × 120,621.13
  4. Step 4: Simplify right side
    221,223.13x = 36,824,246,258.43
  5. Step 5: Solve for x
    x = 36,824,246,258.43/221,223.13
  6. Step 6: Final answer
    x = 166,457.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.