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Finding the Fourth Proportional to 264,205.80, 396,308.70 and 86,718.60

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Solution

The fourth proportional to 264,205.80, 396,308.70 and 86,718.60 is: 130,077.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,205.80 : 396,308.70 = 86,718.60 : x
  2. Step 2: Convert to fraction form
    264,205.80/396,308.70 = 86,718.60/x
  3. Step 3: Cross multiply
    264,205.80x = 396,308.70 × 86,718.60
  4. Step 4: Simplify right side
    264,205.80x = 34,367,335,631.82
  5. Step 5: Solve for x
    x = 34,367,335,631.82/264,205.80
  6. Step 6: Final answer
    x = 130,077.90

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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.