Home / 281,789,804.57-388,856,755.53-156,340,665.38

Finding the Fourth Proportional to 281,789,804.57, 388,856,755.53 and 156,340,665.38

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Solution

The fourth proportional to 281,789,804.57, 388,856,755.53 and 156,340,665.38 is: 215,742,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,789,804.57 : 388,856,755.53 = 156,340,665.38 : x
  2. Step 2: Convert to fraction form
    281,789,804.57/388,856,755.53 = 156,340,665.38/x
  3. Step 3: Cross multiply
    281,789,804.57x = 388,856,755.53 × 156,340,665.38
  4. Step 4: Simplify right side
    281,789,804.57x = 60,794,123,898,040,328
  5. Step 5: Solve for x
    x = 60,794,123,898,040,328/281,789,804.57
  6. Step 6: Final answer
    x = 215,742,808.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.