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Finding the Fourth Proportional to 325,825.54, 488,702.26 and 85,963.75

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Solution

The fourth proportional to 325,825.54, 488,702.26 and 85,963.75 is: 128,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,825.54 : 488,702.26 = 85,963.75 : x
  2. Step 2: Convert to fraction form
    325,825.54/488,702.26 = 85,963.75/x
  3. Step 3: Cross multiply
    325,825.54x = 488,702.26 × 85,963.75
  4. Step 4: Simplify right side
    325,825.54x = 42,010,677,788.77
  5. Step 5: Solve for x
    x = 42,010,677,788.77/325,825.54
  6. Step 6: Final answer
    x = 128,936.11

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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.