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Finding the Fourth Proportional to 259,388.21, 357,956.36 and 144,674.28

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Solution

The fourth proportional to 259,388.21, 357,956.36 and 144,674.28 is: 199,650.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,388.21 : 357,956.36 = 144,674.28 : x
  2. Step 2: Convert to fraction form
    259,388.21/357,956.36 = 144,674.28/x
  3. Step 3: Cross multiply
    259,388.21x = 357,956.36 × 144,674.28
  4. Step 4: Simplify right side
    259,388.21x = 51,787,078,654.42
  5. Step 5: Solve for x
    x = 51,787,078,654.42/259,388.21
  6. Step 6: Final answer
    x = 199,650.86

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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.