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Finding the Fourth Proportional to 219,595.28, 329,243.88 and 69,790.64

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Solution

The fourth proportional to 219,595.28, 329,243.88 and 69,790.64 is: 104,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,595.28 : 329,243.88 = 69,790.64 : x
  2. Step 2: Convert to fraction form
    219,595.28/329,243.88 = 69,790.64/x
  3. Step 3: Cross multiply
    219,595.28x = 329,243.88 × 69,790.64
  4. Step 4: Simplify right side
    219,595.28x = 22,978,141,101.28
  5. Step 5: Solve for x
    x = 22,978,141,101.28/219,595.28
  6. Step 6: Final answer
    x = 104,638.59

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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.