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Finding the Fourth Proportional to 401,652.40, 554,285.96 and 220,361.03

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Solution

The fourth proportional to 401,652.40, 554,285.96 and 220,361.03 is: 304,101.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,652.40 : 554,285.96 = 220,361.03 : x
  2. Step 2: Convert to fraction form
    401,652.40/554,285.96 = 220,361.03/x
  3. Step 3: Cross multiply
    401,652.40x = 554,285.96 × 220,361.03
  4. Step 4: Simplify right side
    401,652.40x = 122,143,025,060.14
  5. Step 5: Solve for x
    x = 122,143,025,060.14/401,652.40
  6. Step 6: Final answer
    x = 304,101.32

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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.