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Finding the Fourth Proportional to 263,809,809.60, 395,714,714.40 and 127,760,913.60

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Solution

The fourth proportional to 263,809,809.60, 395,714,714.40 and 127,760,913.60 is: 191,641,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,809,809.60 : 395,714,714.40 = 127,760,913.60 : x
  2. Step 2: Convert to fraction form
    263,809,809.60/395,714,714.40 = 127,760,913.60/x
  3. Step 3: Cross multiply
    263,809,809.60x = 395,714,714.40 × 127,760,913.60
  4. Step 4: Simplify right side
    263,809,809.60x = 50,556,873,436,707,072
  5. Step 5: Solve for x
    x = 50,556,873,436,707,072/263,809,809.60
  6. Step 6: Final answer
    x = 191,641,370.40

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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.