Home / 256,260,665.21-384,456,520.33-74,507,843.21

Finding the Fourth Proportional to 256,260,665.21, 384,456,520.33 and 74,507,843.21

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Solution

The fourth proportional to 256,260,665.21, 384,456,520.33 and 74,507,843.21 is: 111,780,815.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,260,665.21 : 384,456,520.33 = 74,507,843.21 : x
  2. Step 2: Convert to fraction form
    256,260,665.21/384,456,520.33 = 74,507,843.21/x
  3. Step 3: Cross multiply
    256,260,665.21x = 384,456,520.33 × 74,507,843.21
  4. Step 4: Simplify right side
    256,260,665.21x = 28,645,026,135,701,264
  5. Step 5: Solve for x
    x = 28,645,026,135,701,264/256,260,665.21
  6. Step 6: Final answer
    x = 111,780,815.49

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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.