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Finding the Fourth Proportional to 321,221.88, 482,274.18 and 163,556.28

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Solution

The fourth proportional to 321,221.88, 482,274.18 and 163,556.28 is: 245,559.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,221.88 : 482,274.18 = 163,556.28 : x
  2. Step 2: Convert to fraction form
    321,221.88/482,274.18 = 163,556.28/x
  3. Step 3: Cross multiply
    321,221.88x = 482,274.18 × 163,556.28
  4. Step 4: Simplify right side
    321,221.88x = 78,878,970,820.85
  5. Step 5: Solve for x
    x = 78,878,970,820.85/321,221.88
  6. Step 6: Final answer
    x = 245,559.15

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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.