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Finding the Fourth Proportional to 401,652.90, 554,286.65 and 220,361.53

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Solution

The fourth proportional to 401,652.90, 554,286.65 and 220,361.53 is: 304,102.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,652.90 : 554,286.65 = 220,361.53 : x
  2. Step 2: Convert to fraction form
    401,652.90/554,286.65 = 220,361.53/x
  3. Step 3: Cross multiply
    401,652.90x = 554,286.65 × 220,361.53
  4. Step 4: Simplify right side
    401,652.90x = 122,143,454,252.58
  5. Step 5: Solve for x
    x = 122,143,454,252.58/401,652.90
  6. Step 6: Final answer
    x = 304,102.01

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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.