Home / 256,635,448.22-384,799,439.46-81,682,911.20

Finding the Fourth Proportional to 256,635,448.22, 384,799,439.46 and 81,682,911.20

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Solution

The fourth proportional to 256,635,448.22, 384,799,439.46 and 81,682,911.20 is: 122,475,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,635,448.22 : 384,799,439.46 = 81,682,911.20 : x
  2. Step 2: Convert to fraction form
    256,635,448.22/384,799,439.46 = 81,682,911.20/x
  3. Step 3: Cross multiply
    256,635,448.22x = 384,799,439.46 × 81,682,911.20
  4. Step 4: Simplify right side
    256,635,448.22x = 31,431,538,443,220,956
  5. Step 5: Solve for x
    x = 31,431,538,443,220,956/256,635,448.22
  6. Step 6: Final answer
    x = 122,475,436.11

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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.