Home / 281,407,605.05-388,342,531.77-155,967,899.40

Finding the Fourth Proportional to 281,407,605.05, 388,342,531.77 and 155,967,899.40

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Solution

The fourth proportional to 281,407,605.05, 388,342,531.77 and 155,967,899.40 is: 215,235,721.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,407,605.05 : 388,342,531.77 = 155,967,899.40 : x
  2. Step 2: Convert to fraction form
    281,407,605.05/388,342,531.77 = 155,967,899.40/x
  3. Step 3: Cross multiply
    281,407,605.05x = 388,342,531.77 × 155,967,899.40
  4. Step 4: Simplify right side
    281,407,605.05x = 60,568,968,927,844,664
  5. Step 5: Solve for x
    x = 60,568,968,927,844,664/281,407,605.05
  6. Step 6: Final answer
    x = 215,235,721.57

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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.