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Finding the Fourth Proportional to 308,784, 426,133.44 and 174,645.12

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Solution

The fourth proportional to 308,784, 426,133.44 and 174,645.12 is: 241,016.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,784 : 426,133.44 = 174,645.12 : x
  2. Step 2: Convert to fraction form
    308,784/426,133.44 = 174,645.12/x
  3. Step 3: Cross multiply
    308,784x = 426,133.44 × 174,645.12
  4. Step 4: Simplify right side
    308,784x = 74,422,125,764.81
  5. Step 5: Solve for x
    x = 74,422,125,764.81/308,784
  6. Step 6: Final answer
    x = 241,016.78

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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.