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Finding the Fourth Proportional to 205,600.60, 307,940.10 and 122,656.60

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Solution

The fourth proportional to 205,600.60, 307,940.10 and 122,656.60 is: 183,710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,600.60 : 307,940.10 = 122,656.60 : x
  2. Step 2: Convert to fraction form
    205,600.60/307,940.10 = 122,656.60/x
  3. Step 3: Cross multiply
    205,600.60x = 307,940.10 × 122,656.60
  4. Step 4: Simplify right side
    205,600.60x = 37,770,885,669.66
  5. Step 5: Solve for x
    x = 37,770,885,669.66/205,600.60
  6. Step 6: Final answer
    x = 183,710.00

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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.