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Finding the Fourth Proportional to 205,455.78, 308,183.70 and 55,696.08

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Solution

The fourth proportional to 205,455.78, 308,183.70 and 55,696.08 is: 83,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,455.78 : 308,183.70 = 55,696.08 : x
  2. Step 2: Convert to fraction form
    205,455.78/308,183.70 = 55,696.08/x
  3. Step 3: Cross multiply
    205,455.78x = 308,183.70 × 55,696.08
  4. Step 4: Simplify right side
    205,455.78x = 17,164,624,009.90
  5. Step 5: Solve for x
    x = 17,164,624,009.90/205,455.78
  6. Step 6: Final answer
    x = 83,544.13

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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.