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Finding the Fourth Proportional to 283,938.62, 425,902.86 and 84,393.90

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Solution

The fourth proportional to 283,938.62, 425,902.86 and 84,393.90 is: 126,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,938.62 : 425,902.86 = 84,393.90 : x
  2. Step 2: Convert to fraction form
    283,938.62/425,902.86 = 84,393.90/x
  3. Step 3: Cross multiply
    283,938.62x = 425,902.86 × 84,393.90
  4. Step 4: Simplify right side
    283,938.62x = 35,943,603,376.55
  5. Step 5: Solve for x
    x = 35,943,603,376.55/283,938.62
  6. Step 6: Final answer
    x = 126,589.35

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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.