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Finding the Fourth Proportional to 243,149.80, 364,566.30 and 218,266.60

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Solution

The fourth proportional to 243,149.80, 364,566.30 and 218,266.60 is: 327,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,149.80 : 364,566.30 = 218,266.60 : x
  2. Step 2: Convert to fraction form
    243,149.80/364,566.30 = 218,266.60/x
  3. Step 3: Cross multiply
    243,149.80x = 364,566.30 × 218,266.60
  4. Step 4: Simplify right side
    243,149.80x = 79,572,646,775.58
  5. Step 5: Solve for x
    x = 79,572,646,775.58/243,149.80
  6. Step 6: Final answer
    x = 327,257.71

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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.