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Finding the Fourth Proportional to 220,907.61, 331,860.23 and 131,009.29

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Solution

The fourth proportional to 220,907.61, 331,860.23 and 131,009.29 is: 196,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,907.61 : 331,860.23 = 131,009.29 : x
  2. Step 2: Convert to fraction form
    220,907.61/331,860.23 = 131,009.29/x
  3. Step 3: Cross multiply
    220,907.61x = 331,860.23 × 131,009.29
  4. Step 4: Simplify right side
    220,907.61x = 43,476,772,609.41
  5. Step 5: Solve for x
    x = 43,476,772,609.41/220,907.61
  6. Step 6: Final answer
    x = 196,809.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.