Home / 228,693.36-343,086.05-78,939.45

Finding the Fourth Proportional to 228,693.36, 343,086.05 and 78,939.45

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Solution

The fourth proportional to 228,693.36, 343,086.05 and 78,939.45 is: 118,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,693.36 : 343,086.05 = 78,939.45 : x
  2. Step 2: Convert to fraction form
    228,693.36/343,086.05 = 78,939.45/x
  3. Step 3: Cross multiply
    228,693.36x = 343,086.05 × 78,939.45
  4. Step 4: Simplify right side
    228,693.36x = 27,083,023,694.98
  5. Step 5: Solve for x
    x = 27,083,023,694.98/228,693.36
  6. Step 6: Final answer
    x = 118,425.05

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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.