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Finding the Fourth Proportional to 351,147.60, 526,721.40 and 281,163.60

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Solution

The fourth proportional to 351,147.60, 526,721.40 and 281,163.60 is: 421,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,147.60 : 526,721.40 = 281,163.60 : x
  2. Step 2: Convert to fraction form
    351,147.60/526,721.40 = 281,163.60/x
  3. Step 3: Cross multiply
    351,147.60x = 526,721.40 × 281,163.60
  4. Step 4: Simplify right side
    351,147.60x = 148,094,885,021.04
  5. Step 5: Solve for x
    x = 148,094,885,021.04/351,147.60
  6. Step 6: Final answer
    x = 421,745.40

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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.