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Finding the Fourth Proportional to 325,515.78, 488,589.30 and 157,154.85

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Solution

The fourth proportional to 325,515.78, 488,589.30 and 157,154.85 is: 235,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,515.78 : 488,589.30 = 157,154.85 : x
  2. Step 2: Convert to fraction form
    325,515.78/488,589.30 = 157,154.85/x
  3. Step 3: Cross multiply
    325,515.78x = 488,589.30 × 157,154.85
  4. Step 4: Simplify right side
    325,515.78x = 76,784,178,153.11
  5. Step 5: Solve for x
    x = 76,784,178,153.11/325,515.78
  6. Step 6: Final answer
    x = 235,884.66

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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.