Home / 288,629.05-398,320.39-161,304.64

Finding the Fourth Proportional to 288,629.05, 398,320.39 and 161,304.64

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Solution

The fourth proportional to 288,629.05, 398,320.39 and 161,304.64 is: 222,607.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,629.05 : 398,320.39 = 161,304.64 : x
  2. Step 2: Convert to fraction form
    288,629.05/398,320.39 = 161,304.64/x
  3. Step 3: Cross multiply
    288,629.05x = 398,320.39 × 161,304.64
  4. Step 4: Simplify right side
    288,629.05x = 64,250,927,113.61
  5. Step 5: Solve for x
    x = 64,250,927,113.61/288,629.05
  6. Step 6: Final answer
    x = 222,607.28

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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.