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Finding the Fourth Proportional to 280,219.89, 420,333.48 and 93,231.39

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Solution

The fourth proportional to 280,219.89, 420,333.48 and 93,231.39 is: 139,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,219.89 : 420,333.48 = 93,231.39 : x
  2. Step 2: Convert to fraction form
    280,219.89/420,333.48 = 93,231.39/x
  3. Step 3: Cross multiply
    280,219.89x = 420,333.48 × 93,231.39
  4. Step 4: Simplify right side
    280,219.89x = 39,188,274,603.94
  5. Step 5: Solve for x
    x = 39,188,274,603.94/280,219.89
  6. Step 6: Final answer
    x = 139,848.30

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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.