Home / 231,430.72-347,021.20-105,001.96

Finding the Fourth Proportional to 231,430.72, 347,021.20 and 105,001.96

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Solution

The fourth proportional to 231,430.72, 347,021.20 and 105,001.96 is: 157,446.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,430.72 : 347,021.20 = 105,001.96 : x
  2. Step 2: Convert to fraction form
    231,430.72/347,021.20 = 105,001.96/x
  3. Step 3: Cross multiply
    231,430.72x = 347,021.20 × 105,001.96
  4. Step 4: Simplify right side
    231,430.72x = 36,437,906,161.55
  5. Step 5: Solve for x
    x = 36,437,906,161.55/231,430.72
  6. Step 6: Final answer
    x = 157,446.28

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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.