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Finding the Fourth Proportional to 339,647.96, 509,545.56 and 103,008.80

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Solution

The fourth proportional to 339,647.96, 509,545.56 and 103,008.80 is: 154,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,647.96 : 509,545.56 = 103,008.80 : x
  2. Step 2: Convert to fraction form
    339,647.96/509,545.56 = 103,008.80/x
  3. Step 3: Cross multiply
    339,647.96x = 509,545.56 × 103,008.80
  4. Step 4: Simplify right side
    339,647.96x = 52,487,676,680.93
  5. Step 5: Solve for x
    x = 52,487,676,680.93/339,647.96
  6. Step 6: Final answer
    x = 154,535.53

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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.