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Finding the Fourth Proportional to 199,572.33, 299,406.34 and 66,453.79

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Solution

The fourth proportional to 199,572.33, 299,406.34 and 66,453.79 is: 99,696.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,572.33 : 299,406.34 = 66,453.79 : x
  2. Step 2: Convert to fraction form
    199,572.33/299,406.34 = 66,453.79/x
  3. Step 3: Cross multiply
    199,572.33x = 299,406.34 × 66,453.79
  4. Step 4: Simplify right side
    199,572.33x = 19,896,686,043.03
  5. Step 5: Solve for x
    x = 19,896,686,043.03/199,572.33
  6. Step 6: Final answer
    x = 99,696.62

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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.