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Finding the Fourth Proportional to 308,648.05, 462,877.92 and 108,921.80

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Solution

The fourth proportional to 308,648.05, 462,877.92 and 108,921.80 is: 163,349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,648.05 : 462,877.92 = 108,921.80 : x
  2. Step 2: Convert to fraction form
    308,648.05/462,877.92 = 108,921.80/x
  3. Step 3: Cross multiply
    308,648.05x = 462,877.92 × 108,921.80
  4. Step 4: Simplify right side
    308,648.05x = 50,417,493,503.81
  5. Step 5: Solve for x
    x = 50,417,493,503.81/308,648.05
  6. Step 6: Final answer
    x = 163,349.46

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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.