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Finding the Fourth Proportional to 199,446.17, 298,959.26 and 66,290.67

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Solution

The fourth proportional to 199,446.17, 298,959.26 and 66,290.67 is: 99,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,446.17 : 298,959.26 = 66,290.67 : x
  2. Step 2: Convert to fraction form
    199,446.17/298,959.26 = 66,290.67/x
  3. Step 3: Cross multiply
    199,446.17x = 298,959.26 × 66,290.67
  4. Step 4: Simplify right side
    199,446.17x = 19,818,209,316.65
  5. Step 5: Solve for x
    x = 19,818,209,316.65/199,446.17
  6. Step 6: Final answer
    x = 99,366.21

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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.