Home / 281,396,611.58-388,327,029.46-157,638,159.86

Finding the Fourth Proportional to 281,396,611.58, 388,327,029.46 and 157,638,159.86

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Solution

The fourth proportional to 281,396,611.58, 388,327,029.46 and 157,638,159.86 is: 217,540,495.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,396,611.58 : 388,327,029.46 = 157,638,159.86 : x
  2. Step 2: Convert to fraction form
    281,396,611.58/388,327,029.46 = 157,638,159.86/x
  3. Step 3: Cross multiply
    281,396,611.58x = 388,327,029.46 × 157,638,159.86
  4. Step 4: Simplify right side
    281,396,611.58x = 61,215,158,345,638,672
  5. Step 5: Solve for x
    x = 61,215,158,345,638,672/281,396,611.58
  6. Step 6: Final answer
    x = 217,540,495.61

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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.