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Finding the Fourth Proportional to 345,958.89, 518,935.25 and 109,301.57

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Solution

The fourth proportional to 345,958.89, 518,935.25 and 109,301.57 is: 163,951.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,958.89 : 518,935.25 = 109,301.57 : x
  2. Step 2: Convert to fraction form
    345,958.89/518,935.25 = 109,301.57/x
  3. Step 3: Cross multiply
    345,958.89x = 518,935.25 × 109,301.57
  4. Step 4: Simplify right side
    345,958.89x = 56,720,434,958.67
  5. Step 5: Solve for x
    x = 56,720,434,958.67/345,958.89
  6. Step 6: Final answer
    x = 163,951.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.