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Finding the Fourth Proportional to 342,310.68, 472,405.32 and 189,348.21

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Solution

The fourth proportional to 342,310.68, 472,405.32 and 189,348.21 is: 261,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,310.68 : 472,405.32 = 189,348.21 : x
  2. Step 2: Convert to fraction form
    342,310.68/472,405.32 = 189,348.21/x
  3. Step 3: Cross multiply
    342,310.68x = 472,405.32 × 189,348.21
  4. Step 4: Simplify right side
    342,310.68x = 89,449,101,736.48
  5. Step 5: Solve for x
    x = 89,449,101,736.48/342,310.68
  6. Step 6: Final answer
    x = 261,309.70

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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.