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Finding the Fourth Proportional to 339,579.62, 509,386.35 and 129,233.86

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Solution

The fourth proportional to 339,579.62, 509,386.35 and 129,233.86 is: 193,857.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,579.62 : 509,386.35 = 129,233.86 : x
  2. Step 2: Convert to fraction form
    339,579.62/509,386.35 = 129,233.86/x
  3. Step 3: Cross multiply
    339,579.62x = 509,386.35 × 129,233.86
  4. Step 4: Simplify right side
    339,579.62x = 65,829,964,241.81
  5. Step 5: Solve for x
    x = 65,829,964,241.81/339,579.62
  6. Step 6: Final answer
    x = 193,857.23

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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.