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Finding the Fourth Proportional to 339,735.60, 509,992.20 and 199,573.20

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Solution

The fourth proportional to 339,735.60, 509,992.20 and 199,573.20 is: 299,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,735.60 : 509,992.20 = 199,573.20 : x
  2. Step 2: Convert to fraction form
    339,735.60/509,992.20 = 199,573.20/x
  3. Step 3: Cross multiply
    339,735.60x = 509,992.20 × 199,573.20
  4. Step 4: Simplify right side
    339,735.60x = 101,780,775,329.04
  5. Step 5: Solve for x
    x = 101,780,775,329.04/339,735.60
  6. Step 6: Final answer
    x = 299,588.20

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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.