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Finding the Fourth Proportional to 279,281.39, 384,960.20 and 188,608.37

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Solution

The fourth proportional to 279,281.39, 384,960.20 and 188,608.37 is: 259,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,281.39 : 384,960.20 = 188,608.37 : x
  2. Step 2: Convert to fraction form
    279,281.39/384,960.20 = 188,608.37/x
  3. Step 3: Cross multiply
    279,281.39x = 384,960.20 × 188,608.37
  4. Step 4: Simplify right side
    279,281.39x = 72,606,712,969.03
  5. Step 5: Solve for x
    x = 72,606,712,969.03/279,281.39
  6. Step 6: Final answer
    x = 259,976.92

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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.