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Finding the Fourth Proportional to 308,928.33, 426,100.96 and 283,516.76

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Solution

The fourth proportional to 308,928.33, 426,100.96 and 283,516.76 is: 391,051.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,928.33 : 426,100.96 = 283,516.76 : x
  2. Step 2: Convert to fraction form
    308,928.33/426,100.96 = 283,516.76/x
  3. Step 3: Cross multiply
    308,928.33x = 426,100.96 × 283,516.76
  4. Step 4: Simplify right side
    308,928.33x = 120,806,761,040.14
  5. Step 5: Solve for x
    x = 120,806,761,040.14/308,928.33
  6. Step 6: Final answer
    x = 391,051.09

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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.