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Finding the Fourth Proportional to 397,315.10, 595,991.28 and 131,098.88

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Solution

The fourth proportional to 397,315.10, 595,991.28 and 131,098.88 is: 196,654.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,315.10 : 595,991.28 = 131,098.88 : x
  2. Step 2: Convert to fraction form
    397,315.10/595,991.28 = 131,098.88/x
  3. Step 3: Cross multiply
    397,315.10x = 595,991.28 × 131,098.88
  4. Step 4: Simplify right side
    397,315.10x = 78,133,789,297.77
  5. Step 5: Solve for x
    x = 78,133,789,297.77/397,315.10
  6. Step 6: Final answer
    x = 196,654.47

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1.5x scale

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.