Home / 315,511,896.96-435,180,605.72-221,447,033.56

Finding the Fourth Proportional to 315,511,896.96, 435,180,605.72 and 221,447,033.56

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Solution

The fourth proportional to 315,511,896.96, 435,180,605.72 and 221,447,033.56 is: 305,438,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,511,896.96 : 435,180,605.72 = 221,447,033.56 : x
  2. Step 2: Convert to fraction form
    315,511,896.96/435,180,605.72 = 221,447,033.56/x
  3. Step 3: Cross multiply
    315,511,896.96x = 435,180,605.72 × 221,447,033.56
  4. Step 4: Simplify right side
    315,511,896.96x = 96,369,454,199,537,968
  5. Step 5: Solve for x
    x = 96,369,454,199,537,968/315,511,896.96
  6. Step 6: Final answer
    x = 305,438,416.52

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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.