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Finding the Fourth Proportional to 199,409.45, 299,049.45 and 66,253.95

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Solution

The fourth proportional to 199,409.45, 299,049.45 and 66,253.95 is: 99,359.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,409.45 : 299,049.45 = 66,253.95 : x
  2. Step 2: Convert to fraction form
    199,409.45/299,049.45 = 66,253.95/x
  3. Step 3: Cross multiply
    199,409.45x = 299,049.45 × 66,253.95
  4. Step 4: Simplify right side
    199,409.45x = 19,813,207,307.83
  5. Step 5: Solve for x
    x = 19,813,207,307.83/199,409.45
  6. Step 6: Final answer
    x = 99,359.42

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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.