Home / 250,479,825.78-345,650,448.68-138,969,479.84

Finding the Fourth Proportional to 250,479,825.78, 345,650,448.68 and 138,969,479.84

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Solution

The fourth proportional to 250,479,825.78, 345,650,448.68 and 138,969,479.84 is: 191,771,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,479,825.78 : 345,650,448.68 = 138,969,479.84 : x
  2. Step 2: Convert to fraction form
    250,479,825.78/345,650,448.68 = 138,969,479.84/x
  3. Step 3: Cross multiply
    250,479,825.78x = 345,650,448.68 × 138,969,479.84
  4. Step 4: Simplify right side
    250,479,825.78x = 48,034,863,057,099,120
  5. Step 5: Solve for x
    x = 48,034,863,057,099,120/250,479,825.78
  6. Step 6: Final answer
    x = 191,771,384.81

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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.