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Finding the Fourth Proportional to 219,872.10, 329,808.15 and 149,013.30

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Solution

The fourth proportional to 219,872.10, 329,808.15 and 149,013.30 is: 223,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,872.10 : 329,808.15 = 149,013.30 : x
  2. Step 2: Convert to fraction form
    219,872.10/329,808.15 = 149,013.30/x
  3. Step 3: Cross multiply
    219,872.10x = 329,808.15 × 149,013.30
  4. Step 4: Simplify right side
    219,872.10x = 49,145,800,798.40
  5. Step 5: Solve for x
    x = 49,145,800,798.40/219,872.10
  6. Step 6: Final answer
    x = 223,519.95

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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.