Home / 258,791,059.72-388,056,782.22-86,207,197.96

Finding the Fourth Proportional to 258,791,059.72, 388,056,782.22 and 86,207,197.96

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Solution

The fourth proportional to 258,791,059.72, 388,056,782.22 and 86,207,197.96 is: 129,267,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,791,059.72 : 388,056,782.22 = 86,207,197.96 : x
  2. Step 2: Convert to fraction form
    258,791,059.72/388,056,782.22 = 86,207,197.96/x
  3. Step 3: Cross multiply
    258,791,059.72x = 388,056,782.22 × 86,207,197.96
  4. Step 4: Simplify right side
    258,791,059.72x = 33,453,287,844,560,148
  5. Step 5: Solve for x
    x = 33,453,287,844,560,148/258,791,059.72
  6. Step 6: Final answer
    x = 129,267,556.15

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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.