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Finding the Fourth Proportional to 219,660.30, 329,579.73 and 79,430.22

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Solution

The fourth proportional to 219,660.30, 329,579.73 and 79,430.22 is: 119,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,660.30 : 329,579.73 = 79,430.22 : x
  2. Step 2: Convert to fraction form
    219,660.30/329,579.73 = 79,430.22/x
  3. Step 3: Cross multiply
    219,660.30x = 329,579.73 × 79,430.22
  4. Step 4: Simplify right side
    219,660.30x = 26,178,590,461.44
  5. Step 5: Solve for x
    x = 26,178,590,461.44/219,660.30
  6. Step 6: Final answer
    x = 119,177.61

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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.