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Finding the Fourth Proportional to 339,844.80, 509,637.60 and 103,108.80

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Solution

The fourth proportional to 339,844.80, 509,637.60 and 103,108.80 is: 154,623.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,844.80 : 509,637.60 = 103,108.80 : x
  2. Step 2: Convert to fraction form
    339,844.80/509,637.60 = 103,108.80/x
  3. Step 3: Cross multiply
    339,844.80x = 509,637.60 × 103,108.80
  4. Step 4: Simplify right side
    339,844.80x = 52,548,121,370.88
  5. Step 5: Solve for x
    x = 52,548,121,370.88/339,844.80
  6. Step 6: Final answer
    x = 154,623.88

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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.