Home / 308,986.36-426,063.96-268,341.40

Finding the Fourth Proportional to 308,986.36, 426,063.96 and 268,341.40

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Solution

The fourth proportional to 308,986.36, 426,063.96 and 268,341.40 is: 370,018.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,986.36 : 426,063.96 = 268,341.40 : x
  2. Step 2: Convert to fraction form
    308,986.36/426,063.96 = 268,341.40/x
  3. Step 3: Cross multiply
    308,986.36x = 426,063.96 × 268,341.40
  4. Step 4: Simplify right side
    308,986.36x = 114,330,599,515.94
  5. Step 5: Solve for x
    x = 114,330,599,515.94/308,986.36
  6. Step 6: Final answer
    x = 370,018.27

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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.