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Finding the Fourth Proportional to 321,968.68, 482,906.54 and 108,697.90

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Solution

The fourth proportional to 321,968.68, 482,906.54 and 108,697.90 is: 163,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,968.68 : 482,906.54 = 108,697.90 : x
  2. Step 2: Convert to fraction form
    321,968.68/482,906.54 = 108,697.90/x
  3. Step 3: Cross multiply
    321,968.68x = 482,906.54 × 108,697.90
  4. Step 4: Simplify right side
    321,968.68x = 52,490,926,794.27
  5. Step 5: Solve for x
    x = 52,490,926,794.27/321,968.68
  6. Step 6: Final answer
    x = 163,031.16

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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.