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Finding the Fourth Proportional to 393,456, 590,184 and 130,800

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Solution

The fourth proportional to 393,456, 590,184 and 130,800 is: 196,200

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,456 : 590,184 = 130,800 : x
  2. Step 2: Convert to fraction form
    393,456/590,184 = 130,800/x
  3. Step 3: Cross multiply
    393,456x = 590,184 × 130,800
  4. Step 4: Simplify right side
    393,456x = 77,196,067,200
  5. Step 5: Solve for x
    x = 77,196,067,200/393,456
  6. Step 6: Final answer
    x = 196,200

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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.