Home / 543,742.30-815,905.05-228,231.10

Finding the Fourth Proportional to 543,742.30, 815,905.05 and 228,231.10

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Solution

The fourth proportional to 543,742.30, 815,905.05 and 228,231.10 is: 342,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,742.30 : 815,905.05 = 228,231.10 : x
  2. Step 2: Convert to fraction form
    543,742.30/815,905.05 = 228,231.10/x
  3. Step 3: Cross multiply
    543,742.30x = 815,905.05 × 228,231.10
  4. Step 4: Simplify right side
    543,742.30x = 186,214,907,057.06
  5. Step 5: Solve for x
    x = 186,214,907,057.06/543,742.30
  6. Step 6: Final answer
    x = 342,469.05

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1.5x scale

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.