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Finding the Fourth Proportional to 305,697.06, 421,912.14 and 178,372.34

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Solution

The fourth proportional to 305,697.06, 421,912.14 and 178,372.34 is: 246,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,697.06 : 421,912.14 = 178,372.34 : x
  2. Step 2: Convert to fraction form
    305,697.06/421,912.14 = 178,372.34/x
  3. Step 3: Cross multiply
    305,697.06x = 421,912.14 × 178,372.34
  4. Step 4: Simplify right side
    305,697.06x = 75,257,455,686.21
  5. Step 5: Solve for x
    x = 75,257,455,686.21/305,697.06
  6. Step 6: Final answer
    x = 246,183.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.