Home / 221,335.10-305,469.88-135,276.38

Finding the Fourth Proportional to 221,335.10, 305,469.88 and 135,276.38

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Solution

The fourth proportional to 221,335.10, 305,469.88 and 135,276.38 is: 186,698.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,335.10 : 305,469.88 = 135,276.38 : x
  2. Step 2: Convert to fraction form
    221,335.10/305,469.88 = 135,276.38/x
  3. Step 3: Cross multiply
    221,335.10x = 305,469.88 × 135,276.38
  4. Step 4: Simplify right side
    221,335.10x = 41,322,859,565.43
  5. Step 5: Solve for x
    x = 41,322,859,565.43/221,335.10
  6. Step 6: Final answer
    x = 186,698.18

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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.