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Finding the Fourth Proportional to 401,357.94, 553,879.32 and 220,069.41

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Solution

The fourth proportional to 401,357.94, 553,879.32 and 220,069.41 is: 303,698.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,357.94 : 553,879.32 = 220,069.41 : x
  2. Step 2: Convert to fraction form
    401,357.94/553,879.32 = 220,069.41/x
  3. Step 3: Cross multiply
    401,357.94x = 553,879.32 × 220,069.41
  4. Step 4: Simplify right side
    401,357.94x = 121,891,895,163.60
  5. Step 5: Solve for x
    x = 121,891,895,163.60/401,357.94
  6. Step 6: Final answer
    x = 303,698.73

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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.