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Finding the Fourth Proportional to 339,661.67, 509,492.17 and 86,941.75

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Solution

The fourth proportional to 339,661.67, 509,492.17 and 86,941.75 is: 130,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,661.67 : 509,492.17 = 86,941.75 : x
  2. Step 2: Convert to fraction form
    339,661.67/509,492.17 = 86,941.75/x
  3. Step 3: Cross multiply
    339,661.67x = 509,492.17 × 86,941.75
  4. Step 4: Simplify right side
    339,661.67x = 44,296,141,991.58
  5. Step 5: Solve for x
    x = 44,296,141,991.58/339,661.67
  6. Step 6: Final answer
    x = 130,412.54

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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.