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Finding the Fourth Proportional to 401,734.60, 554,428.80 and 220,481.50

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Solution

The fourth proportional to 401,734.60, 554,428.80 and 220,481.50 is: 304,283.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,734.60 : 554,428.80 = 220,481.50 : x
  2. Step 2: Convert to fraction form
    401,734.60/554,428.80 = 220,481.50/x
  3. Step 3: Cross multiply
    401,734.60x = 554,428.80 × 220,481.50
  4. Step 4: Simplify right side
    401,734.60x = 122,241,293,467.20
  5. Step 5: Solve for x
    x = 122,241,293,467.20/401,734.60
  6. Step 6: Final answer
    x = 304,283.71

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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.