Home / 218,110.32-300,992.28-122,617.20

Finding the Fourth Proportional to 218,110.32, 300,992.28 and 122,617.20

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Solution

The fourth proportional to 218,110.32, 300,992.28 and 122,617.20 is: 169,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,110.32 : 300,992.28 = 122,617.20 : x
  2. Step 2: Convert to fraction form
    218,110.32/300,992.28 = 122,617.20/x
  3. Step 3: Cross multiply
    218,110.32x = 300,992.28 × 122,617.20
  4. Step 4: Simplify right side
    218,110.32x = 36,906,830,595.22
  5. Step 5: Solve for x
    x = 36,906,830,595.22/218,110.32
  6. Step 6: Final answer
    x = 169,211.76

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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.