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Finding the Fourth Proportional to 339,760.40, 509,640.60 and 103,091.60

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Solution

The fourth proportional to 339,760.40, 509,640.60 and 103,091.60 is: 154,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,760.40 : 509,640.60 = 103,091.60 : x
  2. Step 2: Convert to fraction form
    339,760.40/509,640.60 = 103,091.60/x
  3. Step 3: Cross multiply
    339,760.40x = 509,640.60 × 103,091.60
  4. Step 4: Simplify right side
    339,760.40x = 52,539,664,878.96
  5. Step 5: Solve for x
    x = 52,539,664,878.96/339,760.40
  6. Step 6: Final answer
    x = 154,637.40

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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.