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Finding the Fourth Proportional to 259,173.75, 388,734.34 and 69,609.50

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Solution

The fourth proportional to 259,173.75, 388,734.34 and 69,609.50 is: 104,407.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,173.75 : 388,734.34 = 69,609.50 : x
  2. Step 2: Convert to fraction form
    259,173.75/388,734.34 = 69,609.50/x
  3. Step 3: Cross multiply
    259,173.75x = 388,734.34 × 69,609.50
  4. Step 4: Simplify right side
    259,173.75x = 27,059,603,040.23
  5. Step 5: Solve for x
    x = 27,059,603,040.23/259,173.75
  6. Step 6: Final answer
    x = 104,407.19

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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.