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Finding the Fourth Proportional to 400,958.81, 553,323.60 and 219,682.33

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Solution

The fourth proportional to 400,958.81, 553,323.60 and 219,682.33 is: 303,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,958.81 : 553,323.60 = 219,682.33 : x
  2. Step 2: Convert to fraction form
    400,958.81/553,323.60 = 219,682.33/x
  3. Step 3: Cross multiply
    400,958.81x = 553,323.60 × 219,682.33
  4. Step 4: Simplify right side
    400,958.81x = 121,555,414,376.16
  5. Step 5: Solve for x
    x = 121,555,414,376.16/400,958.81
  6. Step 6: Final answer
    x = 303,161.85

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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.