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Finding the Fourth Proportional to 158,978,660.40, 238,467,990.60 and 158,978,660.40

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Solution

The fourth proportional to 158,978,660.40, 238,467,990.60 and 158,978,660.40 is: 238,467,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,978,660.40 : 238,467,990.60 = 158,978,660.40 : x
  2. Step 2: Convert to fraction form
    158,978,660.40/238,467,990.60 = 158,978,660.40/x
  3. Step 3: Cross multiply
    158,978,660.40x = 238,467,990.60 × 158,978,660.40
  4. Step 4: Simplify right side
    158,978,660.40x = 37,911,321,693,867,792
  5. Step 5: Solve for x
    x = 37,911,321,693,867,792/158,978,660.40
  6. Step 6: Final answer
    x = 238,467,990.60

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1.5x scale

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.