Home / 287,431,372.80-431,147,059.20-157,972,345.20

Finding the Fourth Proportional to 287,431,372.80, 431,147,059.20 and 157,972,345.20

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Solution

The fourth proportional to 287,431,372.80, 431,147,059.20 and 157,972,345.20 is: 236,958,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,431,372.80 : 431,147,059.20 = 157,972,345.20 : x
  2. Step 2: Convert to fraction form
    287,431,372.80/431,147,059.20 = 157,972,345.20/x
  3. Step 3: Cross multiply
    287,431,372.80x = 431,147,059.20 × 157,972,345.20
  4. Step 4: Simplify right side
    287,431,372.80x = 68,109,312,067,907,232
  5. Step 5: Solve for x
    x = 68,109,312,067,907,232/287,431,372.80
  6. Step 6: Final answer
    x = 236,958,517.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.