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Finding the Fourth Proportional to 339,717.90, 509,625.45 and 103,079.10

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Solution

The fourth proportional to 339,717.90, 509,625.45 and 103,079.10 is: 154,633.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,717.90 : 509,625.45 = 103,079.10 : x
  2. Step 2: Convert to fraction form
    339,717.90/509,625.45 = 103,079.10/x
  3. Step 3: Cross multiply
    339,717.90x = 509,625.45 × 103,079.10
  4. Step 4: Simplify right side
    339,717.90x = 52,531,732,723.10
  5. Step 5: Solve for x
    x = 52,531,732,723.10/339,717.90
  6. Step 6: Final answer
    x = 154,633.40

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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.