Home / 272,845.59-409,015.83-139,431.75

Finding the Fourth Proportional to 272,845.59, 409,015.83 and 139,431.75

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Solution

The fourth proportional to 272,845.59, 409,015.83 and 139,431.75 is: 209,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,845.59 : 409,015.83 = 139,431.75 : x
  2. Step 2: Convert to fraction form
    272,845.59/409,015.83 = 139,431.75/x
  3. Step 3: Cross multiply
    272,845.59x = 409,015.83 × 139,431.75
  4. Step 4: Simplify right side
    272,845.59x = 57,029,792,954.60
  5. Step 5: Solve for x
    x = 57,029,792,954.60/272,845.59
  6. Step 6: Final answer
    x = 209,018.56

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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.