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Finding the Fourth Proportional to 264,330.80, 396,496.20 and 86,843.60

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Solution

The fourth proportional to 264,330.80, 396,496.20 and 86,843.60 is: 130,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,330.80 : 396,496.20 = 86,843.60 : x
  2. Step 2: Convert to fraction form
    264,330.80/396,496.20 = 86,843.60/x
  3. Step 3: Cross multiply
    264,330.80x = 396,496.20 × 86,843.60
  4. Step 4: Simplify right side
    264,330.80x = 34,433,157,394.32
  5. Step 5: Solve for x
    x = 34,433,157,394.32/264,330.80
  6. Step 6: Final answer
    x = 130,265.40

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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.