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Finding the Fourth Proportional to 213,149.60, 319,504.08 and 79,935.92

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Solution

The fourth proportional to 213,149.60, 319,504.08 and 79,935.92 is: 119,821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,149.60 : 319,504.08 = 79,935.92 : x
  2. Step 2: Convert to fraction form
    213,149.60/319,504.08 = 79,935.92/x
  3. Step 3: Cross multiply
    213,149.60x = 319,504.08 × 79,935.92
  4. Step 4: Simplify right side
    213,149.60x = 25,539,852,578.55
  5. Step 5: Solve for x
    x = 25,539,852,578.55/213,149.60
  6. Step 6: Final answer
    x = 119,821.26

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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.