Home / 343,914.09-515,898.78-130,783.92

Finding the Fourth Proportional to 343,914.09, 515,898.78 and 130,783.92

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Solution

The fourth proportional to 343,914.09, 515,898.78 and 130,783.92 is: 196,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,914.09 : 515,898.78 = 130,783.92 : x
  2. Step 2: Convert to fraction form
    343,914.09/515,898.78 = 130,783.92/x
  3. Step 3: Cross multiply
    343,914.09x = 515,898.78 × 130,783.92
  4. Step 4: Simplify right side
    343,914.09x = 67,471,264,771.62
  5. Step 5: Solve for x
    x = 67,471,264,771.62/343,914.09
  6. Step 6: Final answer
    x = 196,186.39

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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.