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Finding the Fourth Proportional to 218,804.33, 328,177.32 and 61,019.57

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Solution

The fourth proportional to 218,804.33, 328,177.32 and 61,019.57 is: 91,521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,804.33 : 328,177.32 = 61,019.57 : x
  2. Step 2: Convert to fraction form
    218,804.33/328,177.32 = 61,019.57/x
  3. Step 3: Cross multiply
    218,804.33x = 328,177.32 × 61,019.57
  4. Step 4: Simplify right side
    218,804.33x = 20,025,237,309.27
  5. Step 5: Solve for x
    x = 20,025,237,309.27/218,804.33
  6. Step 6: Final answer
    x = 91,521.21

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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.