Home / 427,468,171.06-641,616,889.66-206,295,159.76

Finding the Fourth Proportional to 427,468,171.06, 641,616,889.66 and 206,295,159.76

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Solution

The fourth proportional to 427,468,171.06, 641,616,889.66 and 206,295,159.76 is: 309,642,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,468,171.06 : 641,616,889.66 = 206,295,159.76 : x
  2. Step 2: Convert to fraction form
    427,468,171.06/641,616,889.66 = 206,295,159.76/x
  3. Step 3: Cross multiply
    427,468,171.06x = 641,616,889.66 × 206,295,159.76
  4. Step 4: Simplify right side
    427,468,171.06x = 132,362,458,757,123,984
  5. Step 5: Solve for x
    x = 132,362,458,757,123,984/427,468,171.06
  6. Step 6: Final answer
    x = 309,642,840.61

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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.