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Finding the Fourth Proportional to 325,556.40, 488,287.80 and 125,970.96

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Solution

The fourth proportional to 325,556.40, 488,287.80 and 125,970.96 is: 188,938.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,556.40 : 488,287.80 = 125,970.96 : x
  2. Step 2: Convert to fraction form
    325,556.40/488,287.80 = 125,970.96/x
  3. Step 3: Cross multiply
    325,556.40x = 488,287.80 × 125,970.96
  4. Step 4: Simplify right side
    325,556.40x = 61,510,082,922.29
  5. Step 5: Solve for x
    x = 61,510,082,922.29/325,556.40
  6. Step 6: Final answer
    x = 188,938.33

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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.