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Finding the Fourth Proportional to 401,314.56, 553,820.32 and 220,043.04

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Solution

The fourth proportional to 401,314.56, 553,820.32 and 220,043.04 is: 303,662.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,314.56 : 553,820.32 = 220,043.04 : x
  2. Step 2: Convert to fraction form
    401,314.56/553,820.32 = 220,043.04/x
  3. Step 3: Cross multiply
    401,314.56x = 553,820.32 × 220,043.04
  4. Step 4: Simplify right side
    401,314.56x = 121,864,306,826.57
  5. Step 5: Solve for x
    x = 121,864,306,826.57/401,314.56
  6. Step 6: Final answer
    x = 303,662.81

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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.