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Finding the Fourth Proportional to 179,638.30, 269,457.45 and 74,422.30

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Solution

The fourth proportional to 179,638.30, 269,457.45 and 74,422.30 is: 111,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,638.30 : 269,457.45 = 74,422.30 : x
  2. Step 2: Convert to fraction form
    179,638.30/269,457.45 = 74,422.30/x
  3. Step 3: Cross multiply
    179,638.30x = 269,457.45 × 74,422.30
  4. Step 4: Simplify right side
    179,638.30x = 20,053,643,181.14
  5. Step 5: Solve for x
    x = 20,053,643,181.14/179,638.30
  6. Step 6: Final answer
    x = 111,633.45

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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.