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Finding the Fourth Proportional to 219,674.16, 329,511.24 and 79,429.68

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Solution

The fourth proportional to 219,674.16, 329,511.24 and 79,429.68 is: 119,144.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,674.16 : 329,511.24 = 79,429.68 : x
  2. Step 2: Convert to fraction form
    219,674.16/329,511.24 = 79,429.68/x
  3. Step 3: Cross multiply
    219,674.16x = 329,511.24 × 79,429.68
  4. Step 4: Simplify right side
    219,674.16x = 26,172,972,349.60
  5. Step 5: Solve for x
    x = 26,172,972,349.60/219,674.16
  6. Step 6: Final answer
    x = 119,144.52

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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.