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Finding the Fourth Proportional to 484,538.56, 668,656.52 and 269,678.70

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Solution

The fourth proportional to 484,538.56, 668,656.52 and 269,678.70 is: 372,152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,538.56 : 668,656.52 = 269,678.70 : x
  2. Step 2: Convert to fraction form
    484,538.56/668,656.52 = 269,678.70/x
  3. Step 3: Cross multiply
    484,538.56x = 668,656.52 × 269,678.70
  4. Step 4: Simplify right side
    484,538.56x = 180,322,420,723.03
  5. Step 5: Solve for x
    x = 180,322,420,723.03/484,538.56
  6. Step 6: Final answer
    x = 372,152.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.