Home / 256,634,817.85-384,798,496.46-81,682,281.60

Finding the Fourth Proportional to 256,634,817.85, 384,798,496.46 and 81,682,281.60

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Solution

The fourth proportional to 256,634,817.85, 384,798,496.46 and 81,682,281.60 is: 122,474,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,634,817.85 : 384,798,496.46 = 81,682,281.60 : x
  2. Step 2: Convert to fraction form
    256,634,817.85/384,798,496.46 = 81,682,281.60/x
  3. Step 3: Cross multiply
    256,634,817.85x = 384,798,496.46 × 81,682,281.60
  4. Step 4: Simplify right side
    256,634,817.85x = 31,431,219,145,250,916
  5. Step 5: Solve for x
    x = 31,431,219,145,250,916/256,634,817.85
  6. Step 6: Final answer
    x = 122,474,492.78

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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.