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Finding the Fourth Proportional to 218,794.80, 328,147.40 and 60,983.60

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Solution

The fourth proportional to 218,794.80, 328,147.40 and 60,983.60 is: 91,462.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,794.80 : 328,147.40 = 60,983.60 : x
  2. Step 2: Convert to fraction form
    218,794.80/328,147.40 = 60,983.60/x
  3. Step 3: Cross multiply
    218,794.80x = 328,147.40 × 60,983.60
  4. Step 4: Simplify right side
    218,794.80x = 20,011,609,782.64
  5. Step 5: Solve for x
    x = 20,011,609,782.64/218,794.80
  6. Step 6: Final answer
    x = 91,462.91

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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.