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Finding the Fourth Proportional to 339,887.92, 509,899.92 and 190,340.88

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Solution

The fourth proportional to 339,887.92, 509,899.92 and 190,340.88 is: 285,549.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,887.92 : 509,899.92 = 190,340.88 : x
  2. Step 2: Convert to fraction form
    339,887.92/509,899.92 = 190,340.88/x
  3. Step 3: Cross multiply
    339,887.92x = 509,899.92 × 190,340.88
  4. Step 4: Simplify right side
    339,887.92x = 97,054,799,484.73
  5. Step 5: Solve for x
    x = 97,054,799,484.73/339,887.92
  6. Step 6: Final answer
    x = 285,549.42

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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.