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Finding the Fourth Proportional to 321,195.84, 481,837.98 and 107,980.28

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Solution

The fourth proportional to 321,195.84, 481,837.98 and 107,980.28 is: 161,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,195.84 : 481,837.98 = 107,980.28 : x
  2. Step 2: Convert to fraction form
    321,195.84/481,837.98 = 107,980.28/x
  3. Step 3: Cross multiply
    321,195.84x = 481,837.98 × 107,980.28
  4. Step 4: Simplify right side
    321,195.84x = 52,028,999,995.03
  5. Step 5: Solve for x
    x = 52,028,999,995.03/321,195.84
  6. Step 6: Final answer
    x = 161,985.29

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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.