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Finding the Fourth Proportional to 303,485.80, 418,810.42 and 167,519.78

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Solution

The fourth proportional to 303,485.80, 418,810.42 and 167,519.78 is: 231,177.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,485.80 : 418,810.42 = 167,519.78 : x
  2. Step 2: Convert to fraction form
    303,485.80/418,810.42 = 167,519.78/x
  3. Step 3: Cross multiply
    303,485.80x = 418,810.42 × 167,519.78
  4. Step 4: Simplify right side
    303,485.80x = 70,159,029,420.11
  5. Step 5: Solve for x
    x = 70,159,029,420.11/303,485.80
  6. Step 6: Final answer
    x = 231,177.31

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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.