Home / 278,640.96-384,642.23-188,119.53

Finding the Fourth Proportional to 278,640.96, 384,642.23 and 188,119.53

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Solution

The fourth proportional to 278,640.96, 384,642.23 and 188,119.53 is: 259,684.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,640.96 : 384,642.23 = 188,119.53 : x
  2. Step 2: Convert to fraction form
    278,640.96/384,642.23 = 188,119.53/x
  3. Step 3: Cross multiply
    278,640.96x = 384,642.23 × 188,119.53
  4. Step 4: Simplify right side
    278,640.96x = 72,358,714,585.15
  5. Step 5: Solve for x
    x = 72,358,714,585.15/278,640.96
  6. Step 6: Final answer
    x = 259,684.41

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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.