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Finding the Fourth Proportional to 210,190.66, 315,410.56 and 196,891.58

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Solution

The fourth proportional to 210,190.66, 315,410.56 and 196,891.58 is: 295,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,190.66 : 315,410.56 = 196,891.58 : x
  2. Step 2: Convert to fraction form
    210,190.66/315,410.56 = 196,891.58/x
  3. Step 3: Cross multiply
    210,190.66x = 315,410.56 × 196,891.58
  4. Step 4: Simplify right side
    210,190.66x = 62,101,683,507.08
  5. Step 5: Solve for x
    x = 62,101,683,507.08/210,190.66
  6. Step 6: Final answer
    x = 295,454.06

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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.