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Finding the Fourth Proportional to 339,453, 509,179.50 and 86,734.06

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Solution

The fourth proportional to 339,453, 509,179.50 and 86,734.06 is: 130,101.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,453 : 509,179.50 = 86,734.06 : x
  2. Step 2: Convert to fraction form
    339,453/509,179.50 = 86,734.06/x
  3. Step 3: Cross multiply
    339,453x = 509,179.50 × 86,734.06
  4. Step 4: Simplify right side
    339,453x = 44,163,204,030.82
  5. Step 5: Solve for x
    x = 44,163,204,030.82/339,453
  6. Step 6: Final answer
    x = 130,101.09

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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.