Home / 264,199-396,215.31-86,664.76

Finding the Fourth Proportional to 264,199, 396,215.31 and 86,664.76

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Solution

The fourth proportional to 264,199, 396,215.31 and 86,664.76 is: 129,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,199 : 396,215.31 = 86,664.76 : x
  2. Step 2: Convert to fraction form
    264,199/396,215.31 = 86,664.76/x
  3. Step 3: Cross multiply
    264,199x = 396,215.31 × 86,664.76
  4. Step 4: Simplify right side
    264,199x = 34,337,904,749.48
  5. Step 5: Solve for x
    x = 34,337,904,749.48/264,199
  6. Step 6: Final answer
    x = 129,969.85

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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.