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Finding the Fourth Proportional to 303,305, 418,560.90 and 169,169

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Solution

The fourth proportional to 303,305, 418,560.90 and 169,169 is: 233,453.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,305 : 418,560.90 = 169,169 : x
  2. Step 2: Convert to fraction form
    303,305/418,560.90 = 169,169/x
  3. Step 3: Cross multiply
    303,305x = 418,560.90 × 169,169
  4. Step 4: Simplify right side
    303,305x = 70,807,528,892.10
  5. Step 5: Solve for x
    x = 70,807,528,892.10/303,305
  6. Step 6: Final answer
    x = 233,453.22

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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.