Home / 394,148,630.90-543,901,740.09-217,922,795.30

Finding the Fourth Proportional to 394,148,630.90, 543,901,740.09 and 217,922,795.30

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Solution

The fourth proportional to 394,148,630.90, 543,901,740.09 and 217,922,795.30 is: 300,720,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,148,630.90 : 543,901,740.09 = 217,922,795.30 : x
  2. Step 2: Convert to fraction form
    394,148,630.90/543,901,740.09 = 217,922,795.30/x
  3. Step 3: Cross multiply
    394,148,630.90x = 543,901,740.09 × 217,922,795.30
  4. Step 4: Simplify right side
    394,148,630.90x = 118,528,587,568,946,880
  5. Step 5: Solve for x
    x = 118,528,587,568,946,880/394,148,630.90
  6. Step 6: Final answer
    x = 300,720,536.05

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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.