Home / 281,407,618.40-388,342,550.25-155,967,912.81

Finding the Fourth Proportional to 281,407,618.40, 388,342,550.25 and 155,967,912.81

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Solution

The fourth proportional to 281,407,618.40, 388,342,550.25 and 155,967,912.81 is: 215,235,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,407,618.40 : 388,342,550.25 = 155,967,912.81 : x
  2. Step 2: Convert to fraction form
    281,407,618.40/388,342,550.25 = 155,967,912.81/x
  3. Step 3: Cross multiply
    281,407,618.40x = 388,342,550.25 × 155,967,912.81
  4. Step 4: Simplify right side
    281,407,618.40x = 60,568,977,017,805,048
  5. Step 5: Solve for x
    x = 60,568,977,017,805,048/281,407,618.40
  6. Step 6: Final answer
    x = 215,235,740.11

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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.