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Finding the Fourth Proportional to 418,711.70, 627,973.18 and 119,185.64

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Solution

The fourth proportional to 418,711.70, 627,973.18 and 119,185.64 is: 178,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,711.70 : 627,973.18 = 119,185.64 : x
  2. Step 2: Convert to fraction form
    418,711.70/627,973.18 = 119,185.64/x
  3. Step 3: Cross multiply
    418,711.70x = 627,973.18 × 119,185.64
  4. Step 4: Simplify right side
    418,711.70x = 74,845,385,361.14
  5. Step 5: Solve for x
    x = 74,845,385,361.14/418,711.70
  6. Step 6: Final answer
    x = 178,751.60

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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.