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Finding the Fourth Proportional to 339,880.49, 509,522.65 and 129,378.41

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Solution

The fourth proportional to 339,880.49, 509,522.65 and 129,378.41 is: 193,954.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,880.49 : 509,522.65 = 129,378.41 : x
  2. Step 2: Convert to fraction form
    339,880.49/509,522.65 = 129,378.41/x
  3. Step 3: Cross multiply
    339,880.49x = 509,522.65 × 129,378.41
  4. Step 4: Simplify right side
    339,880.49x = 65,921,230,315.99
  5. Step 5: Solve for x
    x = 65,921,230,315.99/339,880.49
  6. Step 6: Final answer
    x = 193,954.15

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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.