Home / 405,375,128.89-607,905,489.97-139,430,273.33

Finding the Fourth Proportional to 405,375,128.89, 607,905,489.97 and 139,430,273.33

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Solution

The fourth proportional to 405,375,128.89, 607,905,489.97 and 139,430,273.33 is: 209,091,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,375,128.89 : 607,905,489.97 = 139,430,273.33 : x
  2. Step 2: Convert to fraction form
    405,375,128.89/607,905,489.97 = 139,430,273.33/x
  3. Step 3: Cross multiply
    405,375,128.89x = 607,905,489.97 × 139,430,273.33
  4. Step 4: Simplify right side
    405,375,128.89x = 84,760,428,622,285,136
  5. Step 5: Solve for x
    x = 84,760,428,622,285,136/405,375,128.89
  6. Step 6: Final answer
    x = 209,091,339.31

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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.