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Finding the Fourth Proportional to 543,603.72, 815,415.30 and 228,034.20

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Solution

The fourth proportional to 543,603.72, 815,415.30 and 228,034.20 is: 342,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,603.72 : 815,415.30 = 228,034.20 : x
  2. Step 2: Convert to fraction form
    543,603.72/815,415.30 = 228,034.20/x
  3. Step 3: Cross multiply
    543,603.72x = 815,415.30 × 228,034.20
  4. Step 4: Simplify right side
    543,603.72x = 185,942,575,603.26
  5. Step 5: Solve for x
    x = 185,942,575,603.26/543,603.72
  6. Step 6: Final answer
    x = 342,055.38

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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.