Home / 281,235,446.47-388,108,020.32-155,789,563.87

Finding the Fourth Proportional to 281,235,446.47, 388,108,020.32 and 155,789,563.87

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Solution

The fourth proportional to 281,235,446.47, 388,108,020.32 and 155,789,563.87 is: 214,991,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,235,446.47 : 388,108,020.32 = 155,789,563.87 : x
  2. Step 2: Convert to fraction form
    281,235,446.47/388,108,020.32 = 155,789,563.87/x
  3. Step 3: Cross multiply
    281,235,446.47x = 388,108,020.32 × 155,789,563.87
  4. Step 4: Simplify right side
    281,235,446.47x = 60,463,179,220,101,896
  5. Step 5: Solve for x
    x = 60,463,179,220,101,896/281,235,446.47
  6. Step 6: Final answer
    x = 214,991,317.70

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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.