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Finding the Fourth Proportional to 288,558.75, 398,203.65 and 161,235.39

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Solution

The fourth proportional to 288,558.75, 398,203.65 and 161,235.39 is: 222,500.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,558.75 : 398,203.65 = 161,235.39 : x
  2. Step 2: Convert to fraction form
    288,558.75/398,203.65 = 161,235.39/x
  3. Step 3: Cross multiply
    288,558.75x = 398,203.65 × 161,235.39
  4. Step 4: Simplify right side
    288,558.75x = 64,204,520,807.17
  5. Step 5: Solve for x
    x = 64,204,520,807.17/288,558.75
  6. Step 6: Final answer
    x = 222,500.69

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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.