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Finding the Fourth Proportional to 309,215.89, 463,500.11 and 129,404.34

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Solution

The fourth proportional to 309,215.89, 463,500.11 and 129,404.34 is: 193,971.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,215.89 : 463,500.11 = 129,404.34 : x
  2. Step 2: Convert to fraction form
    309,215.89/463,500.11 = 129,404.34/x
  3. Step 3: Cross multiply
    309,215.89x = 463,500.11 × 129,404.34
  4. Step 4: Simplify right side
    309,215.89x = 59,978,923,762.84
  5. Step 5: Solve for x
    x = 59,978,923,762.84/309,215.89
  6. Step 6: Final answer
    x = 193,971.03

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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.