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Finding the Fourth Proportional to 335,919, 503,907.66 and 86,601

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Solution

The fourth proportional to 335,919, 503,907.66 and 86,601 is: 129,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,919 : 503,907.66 = 86,601 : x
  2. Step 2: Convert to fraction form
    335,919/503,907.66 = 86,601/x
  3. Step 3: Cross multiply
    335,919x = 503,907.66 × 86,601
  4. Step 4: Simplify right side
    335,919x = 43,638,907,263.66
  5. Step 5: Solve for x
    x = 43,638,907,263.66/335,919
  6. Step 6: Final answer
    x = 129,909.02

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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.