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Finding the Fourth Proportional to 255,066.60, 382,139.10 and 218,202.60

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Solution

The fourth proportional to 255,066.60, 382,139.10 and 218,202.60 is: 326,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,066.60 : 382,139.10 = 218,202.60 : x
  2. Step 2: Convert to fraction form
    255,066.60/382,139.10 = 218,202.60/x
  3. Step 3: Cross multiply
    255,066.60x = 382,139.10 × 218,202.60
  4. Step 4: Simplify right side
    255,066.60x = 83,383,745,181.66
  5. Step 5: Solve for x
    x = 83,383,745,181.66/255,066.60
  6. Step 6: Final answer
    x = 326,909.70

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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.