Home / 219,835.38-303,355.62-129,194.76

Finding the Fourth Proportional to 219,835.38, 303,355.62 and 129,194.76

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Solution

The fourth proportional to 219,835.38, 303,355.62 and 129,194.76 is: 178,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,835.38 : 303,355.62 = 129,194.76 : x
  2. Step 2: Convert to fraction form
    219,835.38/303,355.62 = 129,194.76/x
  3. Step 3: Cross multiply
    219,835.38x = 303,355.62 × 129,194.76
  4. Step 4: Simplify right side
    219,835.38x = 39,191,956,520.55
  5. Step 5: Solve for x
    x = 39,191,956,520.55/219,835.38
  6. Step 6: Final answer
    x = 178,278.66

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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.