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Finding the Fourth Proportional to 288,343.79, 397,906.71 and 159,279.48

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Solution

The fourth proportional to 288,343.79, 397,906.71 and 159,279.48 is: 219,801.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,343.79 : 397,906.71 = 159,279.48 : x
  2. Step 2: Convert to fraction form
    288,343.79/397,906.71 = 159,279.48/x
  3. Step 3: Cross multiply
    288,343.79x = 397,906.71 × 159,279.48
  4. Step 4: Simplify right side
    288,343.79x = 63,378,373,857.31
  5. Step 5: Solve for x
    x = 63,378,373,857.31/288,343.79
  6. Step 6: Final answer
    x = 219,801.42

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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.