Home / 378,897,542.32-522,873,089.16-211,636,183.60

Finding the Fourth Proportional to 378,897,542.32, 522,873,089.16 and 211,636,183.60

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Solution

The fourth proportional to 378,897,542.32, 522,873,089.16 and 211,636,183.60 is: 292,054,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,897,542.32 : 522,873,089.16 = 211,636,183.60 : x
  2. Step 2: Convert to fraction form
    378,897,542.32/522,873,089.16 = 211,636,183.60/x
  3. Step 3: Cross multiply
    378,897,542.32x = 522,873,089.16 × 211,636,183.60
  4. Step 4: Simplify right side
    378,897,542.32x = 110,658,865,096,964,928
  5. Step 5: Solve for x
    x = 110,658,865,096,964,928/378,897,542.32
  6. Step 6: Final answer
    x = 292,054,850.55

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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.