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Finding the Fourth Proportional to 401,246.87, 553,727.54 and 219,947.20

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Solution

The fourth proportional to 401,246.87, 553,727.54 and 219,947.20 is: 303,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,246.87 : 553,727.54 = 219,947.20 : x
  2. Step 2: Convert to fraction form
    401,246.87/553,727.54 = 219,947.20/x
  3. Step 3: Cross multiply
    401,246.87x = 553,727.54 × 219,947.20
  4. Step 4: Simplify right side
    401,246.87x = 121,790,821,151.44
  5. Step 5: Solve for x
    x = 121,790,821,151.44/401,246.87
  6. Step 6: Final answer
    x = 303,530.90

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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.