Home / 281,235,451.34-388,108,027.05-155,789,568.74

Finding the Fourth Proportional to 281,235,451.34, 388,108,027.05 and 155,789,568.74

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Solution

The fourth proportional to 281,235,451.34, 388,108,027.05 and 155,789,568.74 is: 214,991,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,235,451.34 : 388,108,027.05 = 155,789,568.74 : x
  2. Step 2: Convert to fraction form
    281,235,451.34/388,108,027.05 = 155,789,568.74/x
  3. Step 3: Cross multiply
    281,235,451.34x = 388,108,027.05 × 155,789,568.74
  4. Step 4: Simplify right side
    281,235,451.34x = 60,463,182,158,651,760
  5. Step 5: Solve for x
    x = 60,463,182,158,651,760/281,235,451.34
  6. Step 6: Final answer
    x = 214,991,324.42

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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.