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Finding the Fourth Proportional to 339,891.44, 469,030.92 and 188,985.20

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Solution

The fourth proportional to 339,891.44, 469,030.92 and 188,985.20 is: 260,788.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,891.44 : 469,030.92 = 188,985.20 : x
  2. Step 2: Convert to fraction form
    339,891.44/469,030.92 = 188,985.20/x
  3. Step 3: Cross multiply
    339,891.44x = 469,030.92 × 188,985.20
  4. Step 4: Simplify right side
    339,891.44x = 88,639,902,222.38
  5. Step 5: Solve for x
    x = 88,639,902,222.38/339,891.44
  6. Step 6: Final answer
    x = 260,788.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.