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Finding the Fourth Proportional to 401,356.20, 553,876.90 and 220,067.66

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Solution

The fourth proportional to 401,356.20, 553,876.90 and 220,067.66 is: 303,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,356.20 : 553,876.90 = 220,067.66 : x
  2. Step 2: Convert to fraction form
    401,356.20/553,876.90 = 220,067.66/x
  3. Step 3: Cross multiply
    401,356.20x = 553,876.90 × 220,067.66
  4. Step 4: Simplify right side
    401,356.20x = 121,890,393,311.05
  5. Step 5: Solve for x
    x = 121,890,393,311.05/401,356.20
  6. Step 6: Final answer
    x = 303,696.30

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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.