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Finding the Fourth Proportional to 665,806.56, 998,804.61 and 216,382.92

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Solution

The fourth proportional to 665,806.56, 998,804.61 and 216,382.92 is: 324,605.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,806.56 : 998,804.61 = 216,382.92 : x
  2. Step 2: Convert to fraction form
    665,806.56/998,804.61 = 216,382.92/x
  3. Step 3: Cross multiply
    665,806.56x = 998,804.61 × 216,382.92
  4. Step 4: Simplify right side
    665,806.56x = 216,124,258,021.26
  5. Step 5: Solve for x
    x = 216,124,258,021.26/665,806.56
  6. Step 6: Final answer
    x = 324,605.18

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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.