Home / 276,660,915.48-381,968,145.18-172,392,168.60

Finding the Fourth Proportional to 276,660,915.48, 381,968,145.18 and 172,392,168.60

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Solution

The fourth proportional to 276,660,915.48, 381,968,145.18 and 172,392,168.60 is: 238,010,912.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,660,915.48 : 381,968,145.18 = 172,392,168.60 : x
  2. Step 2: Convert to fraction form
    276,660,915.48/381,968,145.18 = 172,392,168.60/x
  3. Step 3: Cross multiply
    276,660,915.48x = 381,968,145.18 × 172,392,168.60
  4. Step 4: Simplify right side
    276,660,915.48x = 65,848,316,883,699,840
  5. Step 5: Solve for x
    x = 65,848,316,883,699,840/276,660,915.48
  6. Step 6: Final answer
    x = 238,010,912.27

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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.