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Finding the Fourth Proportional to 288,126.44, 397,636.47 and 159,089.79

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Solution

The fourth proportional to 288,126.44, 397,636.47 and 159,089.79 is: 219,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,126.44 : 397,636.47 = 159,089.79 : x
  2. Step 2: Convert to fraction form
    288,126.44/397,636.47 = 159,089.79/x
  3. Step 3: Cross multiply
    288,126.44x = 397,636.47 × 159,089.79
  4. Step 4: Simplify right side
    288,126.44x = 63,259,902,508.64
  5. Step 5: Solve for x
    x = 63,259,902,508.64/288,126.44
  6. Step 6: Final answer
    x = 219,556.05

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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.