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Finding the Fourth Proportional to 401,924.76, 554,653.92 and 220,639.80

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Solution

The fourth proportional to 401,924.76, 554,653.92 and 220,639.80 is: 304,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,924.76 : 554,653.92 = 220,639.80 : x
  2. Step 2: Convert to fraction form
    401,924.76/554,653.92 = 220,639.80/x
  3. Step 3: Cross multiply
    401,924.76x = 554,653.92 × 220,639.80
  4. Step 4: Simplify right side
    401,924.76x = 122,378,729,978.02
  5. Step 5: Solve for x
    x = 122,378,729,978.02/401,924.76
  6. Step 6: Final answer
    x = 304,481.69

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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.