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Finding the Fourth Proportional to 303,679.09, 419,128.41 and 176,428.51

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Solution

The fourth proportional to 303,679.09, 419,128.41 and 176,428.51 is: 243,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,679.09 : 419,128.41 = 176,428.51 : x
  2. Step 2: Convert to fraction form
    303,679.09/419,128.41 = 176,428.51/x
  3. Step 3: Cross multiply
    303,679.09x = 419,128.41 × 176,428.51
  4. Step 4: Simplify right side
    303,679.09x = 73,946,200,874.97
  5. Step 5: Solve for x
    x = 73,946,200,874.97/303,679.09
  6. Step 6: Final answer
    x = 243,501.13

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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.