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Finding the Fourth Proportional to 198,618.06, 297,936.18 and 65,509.94

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Solution

The fourth proportional to 198,618.06, 297,936.18 and 65,509.94 is: 98,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,618.06 : 297,936.18 = 65,509.94 : x
  2. Step 2: Convert to fraction form
    198,618.06/297,936.18 = 65,509.94/x
  3. Step 3: Cross multiply
    198,618.06x = 297,936.18 × 65,509.94
  4. Step 4: Simplify right side
    198,618.06x = 19,517,781,275.63
  5. Step 5: Solve for x
    x = 19,517,781,275.63/198,618.06
  6. Step 6: Final answer
    x = 98,267.91

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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.