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Finding the Fourth Proportional to 418,704.94, 627,963.06 and 119,178.88

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Solution

The fourth proportional to 418,704.94, 627,963.06 and 119,178.88 is: 178,741.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,704.94 : 627,963.06 = 119,178.88 : x
  2. Step 2: Convert to fraction form
    418,704.94/627,963.06 = 119,178.88/x
  3. Step 3: Cross multiply
    418,704.94x = 627,963.06 × 119,178.88
  4. Step 4: Simplify right side
    418,704.94x = 74,839,934,172.17
  5. Step 5: Solve for x
    x = 74,839,934,172.17/418,704.94
  6. Step 6: Final answer
    x = 178,741.46

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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.