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Finding the Fourth Proportional to 218,804.46, 328,177.50 and 61,019.70

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Solution

The fourth proportional to 218,804.46, 328,177.50 and 61,019.70 is: 91,521.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,804.46 : 328,177.50 = 61,019.70 : x
  2. Step 2: Convert to fraction form
    218,804.46/328,177.50 = 61,019.70/x
  3. Step 3: Cross multiply
    218,804.46x = 328,177.50 × 61,019.70
  4. Step 4: Simplify right side
    218,804.46x = 20,025,292,596.75
  5. Step 5: Solve for x
    x = 20,025,292,596.75/218,804.46
  6. Step 6: Final answer
    x = 91,521.41

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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.