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Finding the Fourth Proportional to 303,688.89, 419,090.66 and 176,372.69

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Solution

The fourth proportional to 303,688.89, 419,090.66 and 176,372.69 is: 243,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,688.89 : 419,090.66 = 176,372.69 : x
  2. Step 2: Convert to fraction form
    303,688.89/419,090.66 = 176,372.69/x
  3. Step 3: Cross multiply
    303,688.89x = 419,090.66 × 176,372.69
  4. Step 4: Simplify right side
    303,688.89x = 73,916,147,058.08
  5. Step 5: Solve for x
    x = 73,916,147,058.08/303,688.89
  6. Step 6: Final answer
    x = 243,394.31

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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.