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Finding the Fourth Proportional to 219,676.17, 329,516.01 and 143,838.64

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Solution

The fourth proportional to 219,676.17, 329,516.01 and 143,838.64 is: 215,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,676.17 : 329,516.01 = 143,838.64 : x
  2. Step 2: Convert to fraction form
    219,676.17/329,516.01 = 143,838.64/x
  3. Step 3: Cross multiply
    219,676.17x = 329,516.01 × 143,838.64
  4. Step 4: Simplify right side
    219,676.17x = 47,397,134,736.63
  5. Step 5: Solve for x
    x = 47,397,134,736.63/219,676.17
  6. Step 6: Final answer
    x = 215,759.11

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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.