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Finding the Fourth Proportional to 339,739.98, 509,610.06 and 99,853.89

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Solution

The fourth proportional to 339,739.98, 509,610.06 and 99,853.89 is: 149,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,739.98 : 509,610.06 = 99,853.89 : x
  2. Step 2: Convert to fraction form
    339,739.98/509,610.06 = 99,853.89/x
  3. Step 3: Cross multiply
    339,739.98x = 509,610.06 × 99,853.89
  4. Step 4: Simplify right side
    339,739.98x = 50,886,546,874.13
  5. Step 5: Solve for x
    x = 50,886,546,874.13/339,739.98
  6. Step 6: Final answer
    x = 149,780.86

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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.