Home / 312,012,495.80-468,018,743.70-221,313,231.80

Finding the Fourth Proportional to 312,012,495.80, 468,018,743.70 and 221,313,231.80

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Solution

The fourth proportional to 312,012,495.80, 468,018,743.70 and 221,313,231.80 is: 331,969,847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,012,495.80 : 468,018,743.70 = 221,313,231.80 : x
  2. Step 2: Convert to fraction form
    312,012,495.80/468,018,743.70 = 221,313,231.80/x
  3. Step 3: Cross multiply
    312,012,495.80x = 468,018,743.70 × 221,313,231.80
  4. Step 4: Simplify right side
    312,012,495.80x = 103,578,740,711,222,896
  5. Step 5: Solve for x
    x = 103,578,740,711,222,896/312,012,495.80
  6. Step 6: Final answer
    x = 331,969,847.70

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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.