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Finding the Fourth Proportional to 397,111.90, 595,539.78 and 130,809.10

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Solution

The fourth proportional to 397,111.90, 595,539.78 and 130,809.10 is: 196,171.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,111.90 : 595,539.78 = 130,809.10 : x
  2. Step 2: Convert to fraction form
    397,111.90/595,539.78 = 130,809.10/x
  3. Step 3: Cross multiply
    397,111.90x = 595,539.78 × 130,809.10
  4. Step 4: Simplify right side
    397,111.90x = 77,902,022,636.00
  5. Step 5: Solve for x
    x = 77,902,022,636.00/397,111.90
  6. Step 6: Final answer
    x = 196,171.46

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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.