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Finding the Fourth Proportional to 321,102.48, 443,136.01 and 177,862.51

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Solution

The fourth proportional to 321,102.48, 443,136.01 and 177,862.51 is: 245,458.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,102.48 : 443,136.01 = 177,862.51 : x
  2. Step 2: Convert to fraction form
    321,102.48/443,136.01 = 177,862.51/x
  3. Step 3: Cross multiply
    321,102.48x = 443,136.01 × 177,862.51
  4. Step 4: Simplify right side
    321,102.48x = 78,817,283,009.99
  5. Step 5: Solve for x
    x = 78,817,283,009.99/321,102.48
  6. Step 6: Final answer
    x = 245,458.34

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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.