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Finding the Fourth Proportional to 351,333.78, 526,921.85 and 161,611.94

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Solution

The fourth proportional to 351,333.78, 526,921.85 and 161,611.94 is: 242,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,333.78 : 526,921.85 = 161,611.94 : x
  2. Step 2: Convert to fraction form
    351,333.78/526,921.85 = 161,611.94/x
  3. Step 3: Cross multiply
    351,333.78x = 526,921.85 × 161,611.94
  4. Step 4: Simplify right side
    351,333.78x = 85,156,858,964.22
  5. Step 5: Solve for x
    x = 85,156,858,964.22/351,333.78
  6. Step 6: Final answer
    x = 242,381.64

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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.