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Finding the Fourth Proportional to 401,930.04, 554,628.49 and 220,641.71

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Solution

The fourth proportional to 401,930.04, 554,628.49 and 220,641.71 is: 304,466.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,930.04 : 554,628.49 = 220,641.71 : x
  2. Step 2: Convert to fraction form
    401,930.04/554,628.49 = 220,641.71/x
  3. Step 3: Cross multiply
    401,930.04x = 554,628.49 × 220,641.71
  4. Step 4: Simplify right side
    401,930.04x = 122,374,179,283.29
  5. Step 5: Solve for x
    x = 122,374,179,283.29/401,930.04
  6. Step 6: Final answer
    x = 304,466.37

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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.