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Finding the Fourth Proportional to 321,323.40, 481,985.10 and 121,650.30

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Solution

The fourth proportional to 321,323.40, 481,985.10 and 121,650.30 is: 182,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,323.40 : 481,985.10 = 121,650.30 : x
  2. Step 2: Convert to fraction form
    321,323.40/481,985.10 = 121,650.30/x
  3. Step 3: Cross multiply
    321,323.40x = 481,985.10 × 121,650.30
  4. Step 4: Simplify right side
    321,323.40x = 58,633,632,010.53
  5. Step 5: Solve for x
    x = 58,633,632,010.53/321,323.40
  6. Step 6: Final answer
    x = 182,475.45

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Similar ratio
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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.