Home / 219,956.09-303,546.13-129,295.42

Finding the Fourth Proportional to 219,956.09, 303,546.13 and 129,295.42

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Solution

The fourth proportional to 219,956.09, 303,546.13 and 129,295.42 is: 178,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,956.09 : 303,546.13 = 129,295.42 : x
  2. Step 2: Convert to fraction form
    219,956.09/303,546.13 = 129,295.42/x
  3. Step 3: Cross multiply
    219,956.09x = 303,546.13 × 129,295.42
  4. Step 4: Simplify right side
    219,956.09x = 39,247,124,367.72
  5. Step 5: Solve for x
    x = 39,247,124,367.72/219,956.09
  6. Step 6: Final answer
    x = 178,431.63

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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.