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Finding the Fourth Proportional to 308,505.44, 462,795.60 and 86,889.44

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Solution

The fourth proportional to 308,505.44, 462,795.60 and 86,889.44 is: 130,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,505.44 : 462,795.60 = 86,889.44 : x
  2. Step 2: Convert to fraction form
    308,505.44/462,795.60 = 86,889.44/x
  3. Step 3: Cross multiply
    308,505.44x = 462,795.60 × 86,889.44
  4. Step 4: Simplify right side
    308,505.44x = 40,212,050,518.46
  5. Step 5: Solve for x
    x = 40,212,050,518.46/308,505.44
  6. Step 6: Final answer
    x = 130,344.70

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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.