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Finding the Fourth Proportional to 326,615, 489,922.50 and 104,999

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Solution

The fourth proportional to 326,615, 489,922.50 and 104,999 is: 157,498.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,615 : 489,922.50 = 104,999 : x
  2. Step 2: Convert to fraction form
    326,615/489,922.50 = 104,999/x
  3. Step 3: Cross multiply
    326,615x = 489,922.50 × 104,999
  4. Step 4: Simplify right side
    326,615x = 51,441,372,577.50
  5. Step 5: Solve for x
    x = 51,441,372,577.50/326,615
  6. Step 6: Final answer
    x = 157,498.50

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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.