Home / 339,738.40-509,656.20-103,099.60

Finding the Fourth Proportional to 339,738.40, 509,656.20 and 103,099.60

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Solution

The fourth proportional to 339,738.40, 509,656.20 and 103,099.60 is: 154,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,738.40 : 509,656.20 = 103,099.60 : x
  2. Step 2: Convert to fraction form
    339,738.40/509,656.20 = 103,099.60/x
  3. Step 3: Cross multiply
    339,738.40x = 509,656.20 × 103,099.60
  4. Step 4: Simplify right side
    339,738.40x = 52,545,350,357.52
  5. Step 5: Solve for x
    x = 52,545,350,357.52/339,738.40
  6. Step 6: Final answer
    x = 154,664.15

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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.