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Finding the Fourth Proportional to 270,237.05, 405,372.30 and 90,338.67

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Solution

The fourth proportional to 270,237.05, 405,372.30 and 90,338.67 is: 135,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,237.05 : 405,372.30 = 90,338.67 : x
  2. Step 2: Convert to fraction form
    270,237.05/405,372.30 = 90,338.67/x
  3. Step 3: Cross multiply
    270,237.05x = 405,372.30 × 90,338.67
  4. Step 4: Simplify right side
    270,237.05x = 36,620,794,436.84
  5. Step 5: Solve for x
    x = 36,620,794,436.84/270,237.05
  6. Step 6: Final answer
    x = 135,513.59

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1.5x scale

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.