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Finding the Fourth Proportional to 218,817.59, 328,406.74 and 169,199.96

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Solution

The fourth proportional to 218,817.59, 328,406.74 and 169,199.96 is: 253,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,817.59 : 328,406.74 = 169,199.96 : x
  2. Step 2: Convert to fraction form
    218,817.59/328,406.74 = 169,199.96/x
  3. Step 3: Cross multiply
    218,817.59x = 328,406.74 × 169,199.96
  4. Step 4: Simplify right side
    218,817.59x = 55,566,405,206.70
  5. Step 5: Solve for x
    x = 55,566,405,206.70/218,817.59
  6. Step 6: Final answer
    x = 253,939.40

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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.