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Finding the Fourth Proportional to 308,762.37, 426,099.69 and 172,795.23

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Solution

The fourth proportional to 308,762.37, 426,099.69 and 172,795.23 is: 238,461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,762.37 : 426,099.69 = 172,795.23 : x
  2. Step 2: Convert to fraction form
    308,762.37/426,099.69 = 172,795.23/x
  3. Step 3: Cross multiply
    308,762.37x = 426,099.69 × 172,795.23
  4. Step 4: Simplify right side
    308,762.37x = 73,627,993,936.48
  5. Step 5: Solve for x
    x = 73,627,993,936.48/308,762.37
  6. Step 6: Final answer
    x = 238,461.68

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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.