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Finding the Fourth Proportional to 219,762.96, 329,644.41 and 79,488.78

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Solution

The fourth proportional to 219,762.96, 329,644.41 and 79,488.78 is: 119,233.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,762.96 : 329,644.41 = 79,488.78 : x
  2. Step 2: Convert to fraction form
    219,762.96/329,644.41 = 79,488.78/x
  3. Step 3: Cross multiply
    219,762.96x = 329,644.41 × 79,488.78
  4. Step 4: Simplify right side
    219,762.96x = 26,203,031,984.72
  5. Step 5: Solve for x
    x = 26,203,031,984.72/219,762.96
  6. Step 6: Final answer
    x = 119,233.16

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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.