Home / 288,513.75-398,141.64-161,190.30

Finding the Fourth Proportional to 288,513.75, 398,141.64 and 161,190.30

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Solution

The fourth proportional to 288,513.75, 398,141.64 and 161,190.30 is: 222,438.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,513.75 : 398,141.64 = 161,190.30 : x
  2. Step 2: Convert to fraction form
    288,513.75/398,141.64 = 161,190.30/x
  3. Step 3: Cross multiply
    288,513.75x = 398,141.64 × 161,190.30
  4. Step 4: Simplify right side
    288,513.75x = 64,176,570,394.09
  5. Step 5: Solve for x
    x = 64,176,570,394.09/288,513.75
  6. Step 6: Final answer
    x = 222,438.52

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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.