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Finding the Fourth Proportional to 273,090.80, 409,636.20 and 161,116.40

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Solution

The fourth proportional to 273,090.80, 409,636.20 and 161,116.40 is: 241,674.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,090.80 : 409,636.20 = 161,116.40 : x
  2. Step 2: Convert to fraction form
    273,090.80/409,636.20 = 161,116.40/x
  3. Step 3: Cross multiply
    273,090.80x = 409,636.20 × 161,116.40
  4. Step 4: Simplify right side
    273,090.80x = 65,999,109,853.68
  5. Step 5: Solve for x
    x = 65,999,109,853.68/273,090.80
  6. Step 6: Final answer
    x = 241,674.60

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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.