Home / 219,631.45-329,529.18-86,604.45

Finding the Fourth Proportional to 219,631.45, 329,529.18 and 86,604.45

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Solution

The fourth proportional to 219,631.45, 329,529.18 and 86,604.45 is: 129,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,631.45 : 329,529.18 = 86,604.45 : x
  2. Step 2: Convert to fraction form
    219,631.45/329,529.18 = 86,604.45/x
  3. Step 3: Cross multiply
    219,631.45x = 329,529.18 × 86,604.45
  4. Step 4: Simplify right side
    219,631.45x = 28,538,693,392.85
  5. Step 5: Solve for x
    x = 28,538,693,392.85/219,631.45
  6. Step 6: Final answer
    x = 129,939.01

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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.