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Finding the Fourth Proportional to 243,168.75, 364,754.75 and 76,956.75

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Solution

The fourth proportional to 243,168.75, 364,754.75 and 76,956.75 is: 115,435.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,168.75 : 364,754.75 = 76,956.75 : x
  2. Step 2: Convert to fraction form
    243,168.75/364,754.75 = 76,956.75/x
  3. Step 3: Cross multiply
    243,168.75x = 364,754.75 × 76,956.75
  4. Step 4: Simplify right side
    243,168.75x = 28,070,339,722.28
  5. Step 5: Solve for x
    x = 28,070,339,722.28/243,168.75
  6. Step 6: Final answer
    x = 115,435.64

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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.