Home / 220,415.58-304,176.47-129,771.72

Finding the Fourth Proportional to 220,415.58, 304,176.47 and 129,771.72

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Solution

The fourth proportional to 220,415.58, 304,176.47 and 129,771.72 is: 179,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,415.58 : 304,176.47 = 129,771.72 : x
  2. Step 2: Convert to fraction form
    220,415.58/304,176.47 = 129,771.72/x
  3. Step 3: Cross multiply
    220,415.58x = 304,176.47 × 129,771.72
  4. Step 4: Simplify right side
    220,415.58x = 39,473,503,046.57
  5. Step 5: Solve for x
    x = 39,473,503,046.57/220,415.58
  6. Step 6: Final answer
    x = 179,086.72

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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.