Home / 288,619.86-398,313.09-161,305.62

Finding the Fourth Proportional to 288,619.86, 398,313.09 and 161,305.62

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Solution

The fourth proportional to 288,619.86, 398,313.09 and 161,305.62 is: 222,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,619.86 : 398,313.09 = 161,305.62 : x
  2. Step 2: Convert to fraction form
    288,619.86/398,313.09 = 161,305.62/x
  3. Step 3: Cross multiply
    288,619.86x = 398,313.09 × 161,305.62
  4. Step 4: Simplify right side
    288,619.86x = 64,250,139,936.57
  5. Step 5: Solve for x
    x = 64,250,139,936.57/288,619.86
  6. Step 6: Final answer
    x = 222,611.64

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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.