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Finding the Fourth Proportional to 543,969.42, 815,953.98 and 169,992.42

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Solution

The fourth proportional to 543,969.42, 815,953.98 and 169,992.42 is: 254,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,969.42 : 815,953.98 = 169,992.42 : x
  2. Step 2: Convert to fraction form
    543,969.42/815,953.98 = 169,992.42/x
  3. Step 3: Cross multiply
    543,969.42x = 815,953.98 × 169,992.42
  4. Step 4: Simplify right side
    543,969.42x = 138,705,991,668.83
  5. Step 5: Solve for x
    x = 138,705,991,668.83/543,969.42
  6. Step 6: Final answer
    x = 254,988.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.