Home / 378,897,540.07-522,873,086.06-211,636,181.35

Finding the Fourth Proportional to 378,897,540.07, 522,873,086.06 and 211,636,181.35

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Solution

The fourth proportional to 378,897,540.07, 522,873,086.06 and 211,636,181.35 is: 292,054,847.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,897,540.07 : 522,873,086.06 = 211,636,181.35 : x
  2. Step 2: Convert to fraction form
    378,897,540.07/522,873,086.06 = 211,636,181.35/x
  3. Step 3: Cross multiply
    378,897,540.07x = 522,873,086.06 × 211,636,181.35
  4. Step 4: Simplify right side
    378,897,540.07x = 110,658,863,263,370,128
  5. Step 5: Solve for x
    x = 110,658,863,263,370,128/378,897,540.07
  6. Step 6: Final answer
    x = 292,054,847.45

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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.