Home / 400,961.88-553,327.20-219,685.32

Finding the Fourth Proportional to 400,961.88, 553,327.20 and 219,685.32

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Solution

The fourth proportional to 400,961.88, 553,327.20 and 219,685.32 is: 303,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,961.88 : 553,327.20 = 219,685.32 : x
  2. Step 2: Convert to fraction form
    400,961.88/553,327.20 = 219,685.32/x
  3. Step 3: Cross multiply
    400,961.88x = 553,327.20 × 219,685.32
  4. Step 4: Simplify right side
    400,961.88x = 121,557,862,996.70
  5. Step 5: Solve for x
    x = 121,557,862,996.70/400,961.88
  6. Step 6: Final answer
    x = 303,165.64

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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.