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Finding the Fourth Proportional to 552,361.32, 762,251.36 and 310,643.80

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Solution

The fourth proportional to 552,361.32, 762,251.36 and 310,643.80 is: 428,684.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,361.32 : 762,251.36 = 310,643.80 : x
  2. Step 2: Convert to fraction form
    552,361.32/762,251.36 = 310,643.80/x
  3. Step 3: Cross multiply
    552,361.32x = 762,251.36 × 310,643.80
  4. Step 4: Simplify right side
    552,361.32x = 236,788,659,025.57
  5. Step 5: Solve for x
    x = 236,788,659,025.57/552,361.32
  6. Step 6: Final answer
    x = 428,684.36

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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.