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Finding the Fourth Proportional to 339,454.44, 509,181.59 and 86,735.40

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Solution

The fourth proportional to 339,454.44, 509,181.59 and 86,735.40 is: 130,103.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,454.44 : 509,181.59 = 86,735.40 : x
  2. Step 2: Convert to fraction form
    339,454.44/509,181.59 = 86,735.40/x
  3. Step 3: Cross multiply
    339,454.44x = 509,181.59 × 86,735.40
  4. Step 4: Simplify right side
    339,454.44x = 44,164,068,447.61
  5. Step 5: Solve for x
    x = 44,164,068,447.61/339,454.44
  6. Step 6: Final answer
    x = 130,103.08

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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.