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Finding the Fourth Proportional to 339,618.40, 509,427.60 and 308,125.60

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Solution

The fourth proportional to 339,618.40, 509,427.60 and 308,125.60 is: 462,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,618.40 : 509,427.60 = 308,125.60 : x
  2. Step 2: Convert to fraction form
    339,618.40/509,427.60 = 308,125.60/x
  3. Step 3: Cross multiply
    339,618.40x = 509,427.60 × 308,125.60
  4. Step 4: Simplify right side
    339,618.40x = 156,967,684,906.56
  5. Step 5: Solve for x
    x = 156,967,684,906.56/339,618.40
  6. Step 6: Final answer
    x = 462,188.40

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1.5x scale

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.