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Finding the Fourth Proportional to 308,246.64, 462,185.41 and 128,114.85

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Solution

The fourth proportional to 308,246.64, 462,185.41 and 128,114.85 is: 192,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,246.64 : 462,185.41 = 128,114.85 : x
  2. Step 2: Convert to fraction form
    308,246.64/462,185.41 = 128,114.85/x
  3. Step 3: Cross multiply
    308,246.64x = 462,185.41 × 128,114.85
  4. Step 4: Simplify right side
    308,246.64x = 59,212,814,474.34
  5. Step 5: Solve for x
    x = 59,212,814,474.34/308,246.64
  6. Step 6: Final answer
    x = 192,095.57

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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.