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Finding the Fourth Proportional to 627,648.66, 941,464.80 and 154,338.12

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Solution

The fourth proportional to 627,648.66, 941,464.80 and 154,338.12 is: 231,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,648.66 : 941,464.80 = 154,338.12 : x
  2. Step 2: Convert to fraction form
    627,648.66/941,464.80 = 154,338.12/x
  3. Step 3: Cross multiply
    627,648.66x = 941,464.80 × 154,338.12
  4. Step 4: Simplify right side
    627,648.66x = 145,303,907,278.18
  5. Step 5: Solve for x
    x = 145,303,907,278.18/627,648.66
  6. Step 6: Final answer
    x = 231,505.17

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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.