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Finding the Fourth Proportional to 303,507.20, 418,839.93 and 169,371.20

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Solution

The fourth proportional to 303,507.20, 418,839.93 and 169,371.20 is: 233,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,507.20 : 418,839.93 = 169,371.20 : x
  2. Step 2: Convert to fraction form
    303,507.20/418,839.93 = 169,371.20/x
  3. Step 3: Cross multiply
    303,507.20x = 418,839.93 × 169,371.20
  4. Step 4: Simplify right side
    303,507.20x = 70,939,419,457.82
  5. Step 5: Solve for x
    x = 70,939,419,457.82/303,507.20
  6. Step 6: Final answer
    x = 233,732.25

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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.