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Finding the Fourth Proportional to 393,457, 590,185.50 and 130,801

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Solution

The fourth proportional to 393,457, 590,185.50 and 130,801 is: 196,201.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,457 : 590,185.50 = 130,801 : x
  2. Step 2: Convert to fraction form
    393,457/590,185.50 = 130,801/x
  3. Step 3: Cross multiply
    393,457x = 590,185.50 × 130,801
  4. Step 4: Simplify right side
    393,457x = 77,196,853,585.50
  5. Step 5: Solve for x
    x = 77,196,853,585.50/393,457
  6. Step 6: Final answer
    x = 196,201.50

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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.