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Finding the Fourth Proportional to 400,969.44, 553,329.36 and 219,672.54

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Solution

The fourth proportional to 400,969.44, 553,329.36 and 219,672.54 is: 303,143.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,969.44 : 553,329.36 = 219,672.54 : x
  2. Step 2: Convert to fraction form
    400,969.44/553,329.36 = 219,672.54/x
  3. Step 3: Cross multiply
    400,969.44x = 553,329.36 × 219,672.54
  4. Step 4: Simplify right side
    400,969.44x = 121,551,265,967.77
  5. Step 5: Solve for x
    x = 121,551,265,967.77/400,969.44
  6. Step 6: Final answer
    x = 303,143.47

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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.