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Finding the Fourth Proportional to 321,753.40, 482,630.10 and 308,102.20

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Solution

The fourth proportional to 321,753.40, 482,630.10 and 308,102.20 is: 462,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,753.40 : 482,630.10 = 308,102.20 : x
  2. Step 2: Convert to fraction form
    321,753.40/482,630.10 = 308,102.20/x
  3. Step 3: Cross multiply
    321,753.40x = 482,630.10 × 308,102.20
  4. Step 4: Simplify right side
    321,753.40x = 148,699,395,596.22
  5. Step 5: Solve for x
    x = 148,699,395,596.22/321,753.40
  6. Step 6: Final answer
    x = 462,153.30

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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.