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Finding the Fourth Proportional to 308,917.80, 426,007.05 and 240,910.00

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Solution

The fourth proportional to 308,917.80, 426,007.05 and 240,910.00 is: 332,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,917.80 : 426,007.05 = 240,910.00 : x
  2. Step 2: Convert to fraction form
    308,917.80/426,007.05 = 240,910.00/x
  3. Step 3: Cross multiply
    308,917.80x = 426,007.05 × 240,910.00
  4. Step 4: Simplify right side
    308,917.80x = 102,629,356,447.07
  5. Step 5: Solve for x
    x = 102,629,356,447.07/308,917.80
  6. Step 6: Final answer
    x = 332,222.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.