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Finding the Fourth Proportional to 339,866.43, 509,766.53 and 103,211.16

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Solution

The fourth proportional to 339,866.43, 509,766.53 and 103,211.16 is: 154,806.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,866.43 : 509,766.53 = 103,211.16 : x
  2. Step 2: Convert to fraction form
    339,866.43/509,766.53 = 103,211.16/x
  3. Step 3: Cross multiply
    339,866.43x = 509,766.53 × 103,211.16
  4. Step 4: Simplify right side
    339,866.43x = 52,613,595,148.50
  5. Step 5: Solve for x
    x = 52,613,595,148.50/339,866.43
  6. Step 6: Final answer
    x = 154,806.68

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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.