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Finding the Fourth Proportional to 365,609.90, 548,496.84 and 128,954.54

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Solution

The fourth proportional to 365,609.90, 548,496.84 and 128,954.54 is: 193,460.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,609.90 : 548,496.84 = 128,954.54 : x
  2. Step 2: Convert to fraction form
    365,609.90/548,496.84 = 128,954.54/x
  3. Step 3: Cross multiply
    365,609.90x = 548,496.84 × 128,954.54
  4. Step 4: Simplify right side
    365,609.90x = 70,731,157,693.65
  5. Step 5: Solve for x
    x = 70,731,157,693.65/365,609.90
  6. Step 6: Final answer
    x = 193,460.73

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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.