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Finding the Fourth Proportional to 205,195.60, 307,822.20 and 64,939.60

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Solution

The fourth proportional to 205,195.60, 307,822.20 and 64,939.60 is: 97,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,195.60 : 307,822.20 = 64,939.60 : x
  2. Step 2: Convert to fraction form
    205,195.60/307,822.20 = 64,939.60/x
  3. Step 3: Cross multiply
    205,195.60x = 307,822.20 × 64,939.60
  4. Step 4: Simplify right side
    205,195.60x = 19,989,850,539.12
  5. Step 5: Solve for x
    x = 19,989,850,539.12/205,195.60
  6. Step 6: Final answer
    x = 97,418.51

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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.