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Finding the Fourth Proportional to 321,276.99, 443,351.07 and 178,050.36

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Solution

The fourth proportional to 321,276.99, 443,351.07 and 178,050.36 is: 245,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,276.99 : 443,351.07 = 178,050.36 : x
  2. Step 2: Convert to fraction form
    321,276.99/443,351.07 = 178,050.36/x
  3. Step 3: Cross multiply
    321,276.99x = 443,351.07 × 178,050.36
  4. Step 4: Simplify right side
    321,276.99x = 78,938,817,619.89
  5. Step 5: Solve for x
    x = 78,938,817,619.89/321,276.99
  6. Step 6: Final answer
    x = 245,703.30

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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.