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Finding the Fourth Proportional to 342,310.32, 472,351.89 and 189,324.20

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Solution

The fourth proportional to 342,310.32, 472,351.89 and 189,324.20 is: 261,247.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,310.32 : 472,351.89 = 189,324.20 : x
  2. Step 2: Convert to fraction form
    342,310.32/472,351.89 = 189,324.20/x
  3. Step 3: Cross multiply
    342,310.32x = 472,351.89 × 189,324.20
  4. Step 4: Simplify right side
    342,310.32x = 89,427,642,746.12
  5. Step 5: Solve for x
    x = 89,427,642,746.12/342,310.32
  6. Step 6: Final answer
    x = 261,247.29

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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.