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Finding the Fourth Proportional to 260,679.12, 359,653.58 and 145,940.89

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Solution

The fourth proportional to 260,679.12, 359,653.58 and 145,940.89 is: 201,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,679.12 : 359,653.58 = 145,940.89 : x
  2. Step 2: Convert to fraction form
    260,679.12/359,653.58 = 145,940.89/x
  3. Step 3: Cross multiply
    260,679.12x = 359,653.58 × 145,940.89
  4. Step 4: Simplify right side
    260,679.12x = 52,488,163,556.89
  5. Step 5: Solve for x
    x = 52,488,163,556.89/260,679.12
  6. Step 6: Final answer
    x = 201,351.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.