Home / 221,207.04-305,265.24-120,605.04

Finding the Fourth Proportional to 221,207.04, 305,265.24 and 120,605.04

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Solution

The fourth proportional to 221,207.04, 305,265.24 and 120,605.04 is: 166,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,207.04 : 305,265.24 = 120,605.04 : x
  2. Step 2: Convert to fraction form
    221,207.04/305,265.24 = 120,605.04/x
  3. Step 3: Cross multiply
    221,207.04x = 305,265.24 × 120,605.04
  4. Step 4: Simplify right side
    221,207.04x = 36,816,526,480.81
  5. Step 5: Solve for x
    x = 36,816,526,480.81/221,207.04
  6. Step 6: Final answer
    x = 166,434.70

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1.5x scale

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.