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Finding the Fourth Proportional to 219,694.72, 329,543.76 and 143,857.12

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Solution

The fourth proportional to 219,694.72, 329,543.76 and 143,857.12 is: 215,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,694.72 : 329,543.76 = 143,857.12 : x
  2. Step 2: Convert to fraction form
    219,694.72/329,543.76 = 143,857.12/x
  3. Step 3: Cross multiply
    219,694.72x = 329,543.76 × 143,857.12
  4. Step 4: Simplify right side
    219,694.72x = 47,407,216,227.57
  5. Step 5: Solve for x
    x = 47,407,216,227.57/219,694.72
  6. Step 6: Final answer
    x = 215,786.78

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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.