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Finding the Fourth Proportional to 539,914.72, 809,851.92 and 165,928

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Solution

The fourth proportional to 539,914.72, 809,851.92 and 165,928 is: 248,885.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,914.72 : 809,851.92 = 165,928 : x
  2. Step 2: Convert to fraction form
    539,914.72/809,851.92 = 165,928/x
  3. Step 3: Cross multiply
    539,914.72x = 809,851.92 × 165,928
  4. Step 4: Simplify right side
    539,914.72x = 134,377,109,381.76
  5. Step 5: Solve for x
    x = 134,377,109,381.76/539,914.72
  6. Step 6: Final answer
    x = 248,885.80

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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.