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Finding the Fourth Proportional to 355,175.78, 532,431.53 and 130,475.89

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Solution

The fourth proportional to 355,175.78, 532,431.53 and 130,475.89 is: 195,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,175.78 : 532,431.53 = 130,475.89 : x
  2. Step 2: Convert to fraction form
    355,175.78/532,431.53 = 130,475.89/x
  3. Step 3: Cross multiply
    355,175.78x = 532,431.53 × 130,475.89
  4. Step 4: Simplify right side
    355,175.78x = 69,469,475,757.35
  5. Step 5: Solve for x
    x = 69,469,475,757.35/355,175.78
  6. Step 6: Final answer
    x = 195,591.81

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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.