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Finding the Fourth Proportional to 288,388.54, 397,918.39 and 161,044.54

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Solution

The fourth proportional to 288,388.54, 397,918.39 and 161,044.54 is: 222,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,388.54 : 397,918.39 = 161,044.54 : x
  2. Step 2: Convert to fraction form
    288,388.54/397,918.39 = 161,044.54/x
  3. Step 3: Cross multiply
    288,388.54x = 397,918.39 × 161,044.54
  4. Step 4: Simplify right side
    288,388.54x = 64,082,584,075.09
  5. Step 5: Solve for x
    x = 64,082,584,075.09/288,388.54
  6. Step 6: Final answer
    x = 222,209.19

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1.5x scale

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.