Home / 389,907,367.20-585,084,999.60-147,744,064.80

Finding the Fourth Proportional to 389,907,367.20, 585,084,999.60 and 147,744,064.80

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Solution

The fourth proportional to 389,907,367.20, 585,084,999.60 and 147,744,064.80 is: 221,700,956.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,907,367.20 : 585,084,999.60 = 147,744,064.80 : x
  2. Step 2: Convert to fraction form
    389,907,367.20/585,084,999.60 = 147,744,064.80/x
  3. Step 3: Cross multiply
    389,907,367.20x = 585,084,999.60 × 147,744,064.80
  4. Step 4: Simplify right side
    389,907,367.20x = 86,442,836,094,410,384
  5. Step 5: Solve for x
    x = 86,442,836,094,410,384/389,907,367.20
  6. Step 6: Final answer
    x = 221,700,956.09

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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.