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Finding the Fourth Proportional to 610,745.78, 915,820.19 and 250,820.43

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Solution

The fourth proportional to 610,745.78, 915,820.19 and 250,820.43 is: 376,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,745.78 : 915,820.19 = 250,820.43 : x
  2. Step 2: Convert to fraction form
    610,745.78/915,820.19 = 250,820.43/x
  3. Step 3: Cross multiply
    610,745.78x = 915,820.19 × 250,820.43
  4. Step 4: Simplify right side
    610,745.78x = 229,706,412,604.38
  5. Step 5: Solve for x
    x = 229,706,412,604.38/610,745.78
  6. Step 6: Final answer
    x = 376,108.06

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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.