Home / 256,647,202.20-385,065,281.70-84,129,643.80

Finding the Fourth Proportional to 256,647,202.20, 385,065,281.70 and 84,129,643.80

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Solution

The fourth proportional to 256,647,202.20, 385,065,281.70 and 84,129,643.80 is: 126,225,435.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,647,202.20 : 385,065,281.70 = 84,129,643.80 : x
  2. Step 2: Convert to fraction form
    256,647,202.20/385,065,281.70 = 84,129,643.80/x
  3. Step 3: Cross multiply
    256,647,202.20x = 385,065,281.70 × 84,129,643.80
  4. Step 4: Simplify right side
    256,647,202.20x = 32,395,404,989,167,656
  5. Step 5: Solve for x
    x = 32,395,404,989,167,656/256,647,202.20
  6. Step 6: Final answer
    x = 126,225,435.97

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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.