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Finding the Fourth Proportional to 199,061.40, 298,585.70 and 65,947.80

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Solution

The fourth proportional to 199,061.40, 298,585.70 and 65,947.80 is: 98,919.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,061.40 : 298,585.70 = 65,947.80 : x
  2. Step 2: Convert to fraction form
    199,061.40/298,585.70 = 65,947.80/x
  3. Step 3: Cross multiply
    199,061.40x = 298,585.70 × 65,947.80
  4. Step 4: Simplify right side
    199,061.40x = 19,691,070,026.46
  5. Step 5: Solve for x
    x = 19,691,070,026.46/199,061.40
  6. Step 6: Final answer
    x = 98,919.58

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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.