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Finding the Fourth Proportional to 401,993.20, 554,753.10 and 220,713.04

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Solution

The fourth proportional to 401,993.20, 554,753.10 and 220,713.04 is: 304,585.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,993.20 : 554,753.10 = 220,713.04 : x
  2. Step 2: Convert to fraction form
    401,993.20/554,753.10 = 220,713.04/x
  3. Step 3: Cross multiply
    401,993.20x = 554,753.10 × 220,713.04
  4. Step 4: Simplify right side
    401,993.20x = 122,441,243,150.42
  5. Step 5: Solve for x
    x = 122,441,243,150.42/401,993.20
  6. Step 6: Final answer
    x = 304,585.36

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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.