Home / 394,020.96-543,746.16-215,172.96

Finding the Fourth Proportional to 394,020.96, 543,746.16 and 215,172.96

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Solution

The fourth proportional to 394,020.96, 543,746.16 and 215,172.96 is: 296,937.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,020.96 : 543,746.16 = 215,172.96 : x
  2. Step 2: Convert to fraction form
    394,020.96/543,746.16 = 215,172.96/x
  3. Step 3: Cross multiply
    394,020.96x = 543,746.16 × 215,172.96
  4. Step 4: Simplify right side
    394,020.96x = 116,999,470,735.83
  5. Step 5: Solve for x
    x = 116,999,470,735.83/394,020.96
  6. Step 6: Final answer
    x = 296,937.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.