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Finding the Fourth Proportional to 325,866.40, 488,775.30 and 136,277.80

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Solution

The fourth proportional to 325,866.40, 488,775.30 and 136,277.80 is: 204,406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,866.40 : 488,775.30 = 136,277.80 : x
  2. Step 2: Convert to fraction form
    325,866.40/488,775.30 = 136,277.80/x
  3. Step 3: Cross multiply
    325,866.40x = 488,775.30 × 136,277.80
  4. Step 4: Simplify right side
    325,866.40x = 66,609,222,578.34
  5. Step 5: Solve for x
    x = 66,609,222,578.34/325,866.40
  6. Step 6: Final answer
    x = 204,406.54

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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.