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Finding the Fourth Proportional to 339,740.40, 509,659.20 and 103,101.60

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Solution

The fourth proportional to 339,740.40, 509,659.20 and 103,101.60 is: 154,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,740.40 : 509,659.20 = 103,101.60 : x
  2. Step 2: Convert to fraction form
    339,740.40/509,659.20 = 103,101.60/x
  3. Step 3: Cross multiply
    339,740.40x = 509,659.20 × 103,101.60
  4. Step 4: Simplify right side
    339,740.40x = 52,546,678,974.72
  5. Step 5: Solve for x
    x = 52,546,678,974.72/339,740.40
  6. Step 6: Final answer
    x = 154,667.15

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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.