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Finding the Fourth Proportional to 321,610.50, 482,415.75 and 220,308.66

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Solution

The fourth proportional to 321,610.50, 482,415.75 and 220,308.66 is: 330,462.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,610.50 : 482,415.75 = 220,308.66 : x
  2. Step 2: Convert to fraction form
    321,610.50/482,415.75 = 220,308.66/x
  3. Step 3: Cross multiply
    321,610.50x = 482,415.75 × 220,308.66
  4. Step 4: Simplify right side
    321,610.50x = 106,280,367,445.40
  5. Step 5: Solve for x
    x = 106,280,367,445.40/321,610.50
  6. Step 6: Final answer
    x = 330,462.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.