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Finding the Fourth Proportional to 288,373.88, 397,956.78 and 161,054.28

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Solution

The fourth proportional to 288,373.88, 397,956.78 and 161,054.28 is: 222,255.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,373.88 : 397,956.78 = 161,054.28 : x
  2. Step 2: Convert to fraction form
    288,373.88/397,956.78 = 161,054.28/x
  3. Step 3: Cross multiply
    288,373.88x = 397,956.78 × 161,054.28
  4. Step 4: Simplify right side
    288,373.88x = 64,092,642,674.02
  5. Step 5: Solve for x
    x = 64,092,642,674.02/288,373.88
  6. Step 6: Final answer
    x = 222,255.37

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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.