Home / 218,111.32-300,993.66-122,618.20

Finding the Fourth Proportional to 218,111.32, 300,993.66 and 122,618.20

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Solution

The fourth proportional to 218,111.32, 300,993.66 and 122,618.20 is: 169,213.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,111.32 : 300,993.66 = 122,618.20 : x
  2. Step 2: Convert to fraction form
    218,111.32/300,993.66 = 122,618.20/x
  3. Step 3: Cross multiply
    218,111.32x = 300,993.66 × 122,618.20
  4. Step 4: Simplify right side
    218,111.32x = 36,907,300,800.61
  5. Step 5: Solve for x
    x = 36,907,300,800.61/218,111.32
  6. Step 6: Final answer
    x = 169,213.14

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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.