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Finding the Fourth Proportional to 401,374.56, 553,903.12 and 220,103.04

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Solution

The fourth proportional to 401,374.56, 553,903.12 and 220,103.04 is: 303,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,374.56 : 553,903.12 = 220,103.04 : x
  2. Step 2: Convert to fraction form
    401,374.56/553,903.12 = 220,103.04/x
  3. Step 3: Cross multiply
    401,374.56x = 553,903.12 × 220,103.04
  4. Step 4: Simplify right side
    401,374.56x = 121,915,760,577.49
  5. Step 5: Solve for x
    x = 121,915,760,577.49/401,374.56
  6. Step 6: Final answer
    x = 303,745.61

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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.