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Finding the Fourth Proportional to 218,786.51, 328,179.74 and 52,574.51

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Solution

The fourth proportional to 218,786.51, 328,179.74 and 52,574.51 is: 78,861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,786.51 : 328,179.74 = 52,574.51 : x
  2. Step 2: Convert to fraction form
    218,786.51/328,179.74 = 52,574.51/x
  3. Step 3: Cross multiply
    218,786.51x = 328,179.74 × 52,574.51
  4. Step 4: Simplify right side
    218,786.51x = 17,253,889,580.00
  5. Step 5: Solve for x
    x = 17,253,889,580.00/218,786.51
  6. Step 6: Final answer
    x = 78,861.76

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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.