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Finding the Fourth Proportional to 288,628.80, 398,320.05 and 161,304.39

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Solution

The fourth proportional to 288,628.80, 398,320.05 and 161,304.39 is: 222,606.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,628.80 : 398,320.05 = 161,304.39 : x
  2. Step 2: Convert to fraction form
    288,628.80/398,320.05 = 161,304.39/x
  3. Step 3: Cross multiply
    288,628.80x = 398,320.05 × 161,304.39
  4. Step 4: Simplify right side
    288,628.80x = 64,250,772,690.02
  5. Step 5: Solve for x
    x = 64,250,772,690.02/288,628.80
  6. Step 6: Final answer
    x = 222,606.94

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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.