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Finding the Fourth Proportional to 343,873,076.80, 515,809,615.20 and 228,483,457.60

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Solution

The fourth proportional to 343,873,076.80, 515,809,615.20 and 228,483,457.60 is: 342,725,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,873,076.80 : 515,809,615.20 = 228,483,457.60 : x
  2. Step 2: Convert to fraction form
    343,873,076.80/515,809,615.20 = 228,483,457.60/x
  3. Step 3: Cross multiply
    343,873,076.80x = 515,809,615.20 × 228,483,457.60
  4. Step 4: Simplify right side
    343,873,076.80x = 117,853,964,344,221,504
  5. Step 5: Solve for x
    x = 117,853,964,344,221,504/343,873,076.80
  6. Step 6: Final answer
    x = 342,725,186.40

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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.