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Finding the Fourth Proportional to 210,189.66, 315,409.06 and 196,890.58

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Solution

The fourth proportional to 210,189.66, 315,409.06 and 196,890.58 is: 295,452.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,189.66 : 315,409.06 = 196,890.58 : x
  2. Step 2: Convert to fraction form
    210,189.66/315,409.06 = 196,890.58/x
  3. Step 3: Cross multiply
    210,189.66x = 315,409.06 × 196,890.58
  4. Step 4: Simplify right side
    210,189.66x = 62,101,072,760.65
  5. Step 5: Solve for x
    x = 62,101,072,760.65/210,189.66
  6. Step 6: Final answer
    x = 295,452.56

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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.