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Finding the Fourth Proportional to 400,963.57, 552,886.44 and 255,539.21

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Solution

The fourth proportional to 400,963.57, 552,886.44 and 255,539.21 is: 352,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,963.57 : 552,886.44 = 255,539.21 : x
  2. Step 2: Convert to fraction form
    400,963.57/552,886.44 = 255,539.21/x
  3. Step 3: Cross multiply
    400,963.57x = 552,886.44 × 255,539.21
  4. Step 4: Simplify right side
    400,963.57x = 141,284,161,812.02
  5. Step 5: Solve for x
    x = 141,284,161,812.02/400,963.57
  6. Step 6: Final answer
    x = 352,361.59

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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.