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Finding the Fourth Proportional to 275,313.36, 412,920.66 and 72,910.74

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Solution

The fourth proportional to 275,313.36, 412,920.66 and 72,910.74 is: 109,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,313.36 : 412,920.66 = 72,910.74 : x
  2. Step 2: Convert to fraction form
    275,313.36/412,920.66 = 72,910.74/x
  3. Step 3: Cross multiply
    275,313.36x = 412,920.66 × 72,910.74
  4. Step 4: Simplify right side
    275,313.36x = 30,106,350,881.89
  5. Step 5: Solve for x
    x = 30,106,350,881.89/275,313.36
  6. Step 6: Final answer
    x = 109,353.03

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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.