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Finding the Fourth Proportional to 321,663.71, 443,887.36 and 185,693.06

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Solution

The fourth proportional to 321,663.71, 443,887.36 and 185,693.06 is: 256,251.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,663.71 : 443,887.36 = 185,693.06 : x
  2. Step 2: Convert to fraction form
    321,663.71/443,887.36 = 185,693.06/x
  3. Step 3: Cross multiply
    321,663.71x = 443,887.36 × 185,693.06
  4. Step 4: Simplify right side
    321,663.71x = 82,426,802,819.21
  5. Step 5: Solve for x
    x = 82,426,802,819.21/321,663.71
  6. Step 6: Final answer
    x = 256,251.48

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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.