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Finding the Fourth Proportional to 165,028.80, 247,543.20 and 40,369.80

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Solution

The fourth proportional to 165,028.80, 247,543.20 and 40,369.80 is: 60,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,028.80 : 247,543.20 = 40,369.80 : x
  2. Step 2: Convert to fraction form
    165,028.80/247,543.20 = 40,369.80/x
  3. Step 3: Cross multiply
    165,028.80x = 247,543.20 × 40,369.80
  4. Step 4: Simplify right side
    165,028.80x = 9,993,269,475.36
  5. Step 5: Solve for x
    x = 9,993,269,475.36/165,028.80
  6. Step 6: Final answer
    x = 60,554.70

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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.