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Finding the Fourth Proportional to 418,558.56, 627,840.27 and 103,013.34

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Solution

The fourth proportional to 418,558.56, 627,840.27 and 103,013.34 is: 154,520.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,558.56 : 627,840.27 = 103,013.34 : x
  2. Step 2: Convert to fraction form
    418,558.56/627,840.27 = 103,013.34/x
  3. Step 3: Cross multiply
    418,558.56x = 627,840.27 × 103,013.34
  4. Step 4: Simplify right side
    418,558.56x = 64,675,923,199.20
  5. Step 5: Solve for x
    x = 64,675,923,199.20/418,558.56
  6. Step 6: Final answer
    x = 154,520.61

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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.