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Finding the Fourth Proportional to 312,650.85, 431,458.56 and 169,410.87

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Solution

The fourth proportional to 312,650.85, 431,458.56 and 169,410.87 is: 233,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,650.85 : 431,458.56 = 169,410.87 : x
  2. Step 2: Convert to fraction form
    312,650.85/431,458.56 = 169,410.87/x
  3. Step 3: Cross multiply
    312,650.85x = 431,458.56 × 169,410.87
  4. Step 4: Simplify right side
    312,650.85x = 73,093,770,018.55
  5. Step 5: Solve for x
    x = 73,093,770,018.55/312,650.85
  6. Step 6: Final answer
    x = 233,787.21

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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.