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Finding the Fourth Proportional to 308,262.78, 462,656.61 and 121,405.50

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Solution

The fourth proportional to 308,262.78, 462,656.61 and 121,405.50 is: 182,211.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,262.78 : 462,656.61 = 121,405.50 : x
  2. Step 2: Convert to fraction form
    308,262.78/462,656.61 = 121,405.50/x
  3. Step 3: Cross multiply
    308,262.78x = 462,656.61 × 121,405.50
  4. Step 4: Simplify right side
    308,262.78x = 56,169,057,065.36
  5. Step 5: Solve for x
    x = 56,169,057,065.36/308,262.78
  6. Step 6: Final answer
    x = 182,211.61

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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.