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Finding the Fourth Proportional to 239,819.49, 359,644.78 and 79,851.98

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Solution

The fourth proportional to 239,819.49, 359,644.78 and 79,851.98 is: 119,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,819.49 : 359,644.78 = 79,851.98 : x
  2. Step 2: Convert to fraction form
    239,819.49/359,644.78 = 79,851.98/x
  3. Step 3: Cross multiply
    239,819.49x = 359,644.78 × 79,851.98
  4. Step 4: Simplify right side
    239,819.49x = 28,718,347,779.66
  5. Step 5: Solve for x
    x = 28,718,347,779.66/239,819.49
  6. Step 6: Final answer
    x = 119,749.85

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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.