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Finding the Fourth Proportional to 320,808.60, 481,212.90 and 163,344.60

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Solution

The fourth proportional to 320,808.60, 481,212.90 and 163,344.60 is: 245,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,808.60 : 481,212.90 = 163,344.60 : x
  2. Step 2: Convert to fraction form
    320,808.60/481,212.90 = 163,344.60/x
  3. Step 3: Cross multiply
    320,808.60x = 481,212.90 × 163,344.60
  4. Step 4: Simplify right side
    320,808.60x = 78,603,528,665.34
  5. Step 5: Solve for x
    x = 78,603,528,665.34/320,808.60
  6. Step 6: Final answer
    x = 245,016.90

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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.