Home / 220,611.24-304,443.78-120,009

Finding the Fourth Proportional to 220,611.24, 304,443.78 and 120,009

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Solution

The fourth proportional to 220,611.24, 304,443.78 and 120,009 is: 165,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,611.24 : 304,443.78 = 120,009 : x
  2. Step 2: Convert to fraction form
    220,611.24/304,443.78 = 120,009/x
  3. Step 3: Cross multiply
    220,611.24x = 304,443.78 × 120,009
  4. Step 4: Simplify right side
    220,611.24x = 36,535,993,594.02
  5. Step 5: Solve for x
    x = 36,535,993,594.02/220,611.24
  6. Step 6: Final answer
    x = 165,612.57

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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.