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Finding the Fourth Proportional to 217,322.58, 299,892.69 and 126,693.30

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Solution

The fourth proportional to 217,322.58, 299,892.69 and 126,693.30 is: 174,829.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,322.58 : 299,892.69 = 126,693.30 : x
  2. Step 2: Convert to fraction form
    217,322.58/299,892.69 = 126,693.30/x
  3. Step 3: Cross multiply
    217,322.58x = 299,892.69 × 126,693.30
  4. Step 4: Simplify right side
    217,322.58x = 37,994,394,541.98
  5. Step 5: Solve for x
    x = 37,994,394,541.98/217,322.58
  6. Step 6: Final answer
    x = 174,829.48

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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.