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Finding the Fourth Proportional to 418,162.64, 627,267.78 and 118,619.78

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Solution

The fourth proportional to 418,162.64, 627,267.78 and 118,619.78 is: 177,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,162.64 : 627,267.78 = 118,619.78 : x
  2. Step 2: Convert to fraction form
    418,162.64/627,267.78 = 118,619.78/x
  3. Step 3: Cross multiply
    418,162.64x = 627,267.78 × 118,619.78
  4. Step 4: Simplify right side
    418,162.64x = 74,406,362,928.35
  5. Step 5: Solve for x
    x = 74,406,362,928.35/418,162.64
  6. Step 6: Final answer
    x = 177,936.42

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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.