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Finding the Fourth Proportional to 253,660,786.60, 380,397,851.70 and 87,622,036.70

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Solution

The fourth proportional to 253,660,786.60, 380,397,851.70 and 87,622,036.70 is: 131,400,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,660,786.60 : 380,397,851.70 = 87,622,036.70 : x
  2. Step 2: Convert to fraction form
    253,660,786.60/380,397,851.70 = 87,622,036.70/x
  3. Step 3: Cross multiply
    253,660,786.60x = 380,397,851.70 × 87,622,036.70
  4. Step 4: Simplify right side
    253,660,786.60x = 33,331,234,522,258,556
  5. Step 5: Solve for x
    x = 33,331,234,522,258,556/253,660,786.60
  6. Step 6: Final answer
    x = 131,400,816.69

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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.