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Finding the Fourth Proportional to 321,371.34, 443,484.90 and 185,405.58

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Solution

The fourth proportional to 321,371.34, 443,484.90 and 185,405.58 is: 255,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,371.34 : 443,484.90 = 185,405.58 : x
  2. Step 2: Convert to fraction form
    321,371.34/443,484.90 = 185,405.58/x
  3. Step 3: Cross multiply
    321,371.34x = 443,484.90 × 185,405.58
  4. Step 4: Simplify right side
    321,371.34x = 82,224,575,105.74
  5. Step 5: Solve for x
    x = 82,224,575,105.74/321,371.34
  6. Step 6: Final answer
    x = 255,855.35

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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.