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Finding the Fourth Proportional to 401,034.60, 553,426.02 and 219,745.80

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Solution

The fourth proportional to 401,034.60, 553,426.02 and 219,745.80 is: 303,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,034.60 : 553,426.02 = 219,745.80 : x
  2. Step 2: Convert to fraction form
    401,034.60/553,426.02 = 219,745.80/x
  3. Step 3: Cross multiply
    401,034.60x = 553,426.02 × 219,745.80
  4. Step 4: Simplify right side
    401,034.60x = 121,613,043,505.72
  5. Step 5: Solve for x
    x = 121,613,043,505.72/401,034.60
  6. Step 6: Final answer
    x = 303,248.26

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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.