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Finding the Fourth Proportional to 205,399.40, 307,661.70 and 166,033.40

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Solution

The fourth proportional to 205,399.40, 307,661.70 and 166,033.40 is: 248,696.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,399.40 : 307,661.70 = 166,033.40 : x
  2. Step 2: Convert to fraction form
    205,399.40/307,661.70 = 166,033.40/x
  3. Step 3: Cross multiply
    205,399.40x = 307,661.70 × 166,033.40
  4. Step 4: Simplify right side
    205,399.40x = 51,082,118,100.78
  5. Step 5: Solve for x
    x = 51,082,118,100.78/205,399.40
  6. Step 6: Final answer
    x = 248,696.53

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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.