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Finding the Fourth Proportional to 222,454.20, 306,987.71 and 120,480.87

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Solution

The fourth proportional to 222,454.20, 306,987.71 and 120,480.87 is: 166,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,454.20 : 306,987.71 = 120,480.87 : x
  2. Step 2: Convert to fraction form
    222,454.20/306,987.71 = 120,480.87/x
  3. Step 3: Cross multiply
    222,454.20x = 306,987.71 × 120,480.87
  4. Step 4: Simplify right side
    222,454.20x = 36,986,146,380.11
  5. Step 5: Solve for x
    x = 36,986,146,380.11/222,454.20
  6. Step 6: Final answer
    x = 166,264.10

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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.