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Finding the Fourth Proportional to 321,359.90, 443,491.20 and 183,550.91

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Solution

The fourth proportional to 321,359.90, 443,491.20 and 183,550.91 is: 253,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,359.90 : 443,491.20 = 183,550.91 : x
  2. Step 2: Convert to fraction form
    321,359.90/443,491.20 = 183,550.91/x
  3. Step 3: Cross multiply
    321,359.90x = 443,491.20 × 183,550.91
  4. Step 4: Simplify right side
    321,359.90x = 81,403,211,119.54
  5. Step 5: Solve for x
    x = 81,403,211,119.54/321,359.90
  6. Step 6: Final answer
    x = 253,308.56

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1.5x scale

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.