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Finding the Fourth Proportional to 254,976.30, 382,500.90 and 86,504.40

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Solution

The fourth proportional to 254,976.30, 382,500.90 and 86,504.40 is: 129,768.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,976.30 : 382,500.90 = 86,504.40 : x
  2. Step 2: Convert to fraction form
    254,976.30/382,500.90 = 86,504.40/x
  3. Step 3: Cross multiply
    254,976.30x = 382,500.90 × 86,504.40
  4. Step 4: Simplify right side
    254,976.30x = 33,088,010,853.96
  5. Step 5: Solve for x
    x = 33,088,010,853.96/254,976.30
  6. Step 6: Final answer
    x = 129,768.97

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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.