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Finding the Fourth Proportional to 418,394.36, 627,238.89 and 181,558.67

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Solution

The fourth proportional to 418,394.36, 627,238.89 and 181,558.67 is: 272,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,394.36 : 627,238.89 = 181,558.67 : x
  2. Step 2: Convert to fraction form
    418,394.36/627,238.89 = 181,558.67/x
  3. Step 3: Cross multiply
    418,394.36x = 627,238.89 × 181,558.67
  4. Step 4: Simplify right side
    418,394.36x = 113,880,655,504.48
  5. Step 5: Solve for x
    x = 113,880,655,504.48/418,394.36
  6. Step 6: Final answer
    x = 272,184.97

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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.