Home / 543,648.20-815,666.70-228,201.80

Finding the Fourth Proportional to 543,648.20, 815,666.70 and 228,201.80

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Solution

The fourth proportional to 543,648.20, 815,666.70 and 228,201.80 is: 342,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,648.20 : 815,666.70 = 228,201.80 : x
  2. Step 2: Convert to fraction form
    543,648.20/815,666.70 = 228,201.80/x
  3. Step 3: Cross multiply
    543,648.20x = 815,666.70 × 228,201.80
  4. Step 4: Simplify right side
    543,648.20x = 186,136,609,140.06
  5. Step 5: Solve for x
    x = 186,136,609,140.06/543,648.20
  6. Step 6: Final answer
    x = 342,384.30

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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.