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Finding the Fourth Proportional to 255,084.60, 382,610.70 and 86,604.60

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Solution

The fourth proportional to 255,084.60, 382,610.70 and 86,604.60 is: 129,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,084.60 : 382,610.70 = 86,604.60 : x
  2. Step 2: Convert to fraction form
    255,084.60/382,610.70 = 86,604.60/x
  3. Step 3: Cross multiply
    255,084.60x = 382,610.70 × 86,604.60
  4. Step 4: Simplify right side
    255,084.60x = 33,135,846,629.22
  5. Step 5: Solve for x
    x = 33,135,846,629.22/255,084.60
  6. Step 6: Final answer
    x = 129,901.40

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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.