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Finding the Fourth Proportional to 384,512.40, 576,811.80 and 118,270.80

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Solution

The fourth proportional to 384,512.40, 576,811.80 and 118,270.80 is: 177,419.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,512.40 : 576,811.80 = 118,270.80 : x
  2. Step 2: Convert to fraction form
    384,512.40/576,811.80 = 118,270.80/x
  3. Step 3: Cross multiply
    384,512.40x = 576,811.80 × 118,270.80
  4. Step 4: Simplify right side
    384,512.40x = 68,219,993,035.44
  5. Step 5: Solve for x
    x = 68,219,993,035.44/384,512.40
  6. Step 6: Final answer
    x = 177,419.49

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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.