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Finding the Fourth Proportional to 243,015.59, 364,523.39 and 76,790.63

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Solution

The fourth proportional to 243,015.59, 364,523.39 and 76,790.63 is: 115,185.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,015.59 : 364,523.39 = 76,790.63 : x
  2. Step 2: Convert to fraction form
    243,015.59/364,523.39 = 76,790.63/x
  3. Step 3: Cross multiply
    243,015.59x = 364,523.39 × 76,790.63
  4. Step 4: Simplify right side
    243,015.59x = 27,991,978,561.27
  5. Step 5: Solve for x
    x = 27,991,978,561.27/243,015.59
  6. Step 6: Final answer
    x = 115,185.94

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1.5x scale

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.