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Finding the Fourth Proportional to 627,991.32, 941,987.22 and 154,685.88

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Solution

The fourth proportional to 627,991.32, 941,987.22 and 154,685.88 is: 232,028.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,991.32 : 941,987.22 = 154,685.88 : x
  2. Step 2: Convert to fraction form
    627,991.32/941,987.22 = 154,685.88/x
  3. Step 3: Cross multiply
    627,991.32x = 941,987.22 × 154,685.88
  4. Step 4: Simplify right side
    627,991.32x = 145,712,122,074.45
  5. Step 5: Solve for x
    x = 145,712,122,074.45/627,991.32
  6. Step 6: Final answer
    x = 232,028.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.