Home / 258,791,208.22-388,057,004.96-86,207,346.46

Finding the Fourth Proportional to 258,791,208.22, 388,057,004.96 and 86,207,346.46

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Solution

The fourth proportional to 258,791,208.22, 388,057,004.96 and 86,207,346.46 is: 129,267,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,791,208.22 : 388,057,004.96 = 86,207,346.46 : x
  2. Step 2: Convert to fraction form
    258,791,208.22/388,057,004.96 = 86,207,346.46/x
  3. Step 3: Cross multiply
    258,791,208.22x = 388,057,004.96 × 86,207,346.46
  4. Step 4: Simplify right side
    258,791,208.22x = 33,453,364,672,816,656
  5. Step 5: Solve for x
    x = 33,453,364,672,816,656/258,791,208.22
  6. Step 6: Final answer
    x = 129,267,778.85

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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.