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Finding the Fourth Proportional to 264,479.23, 396,634.59 and 86,945.32

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Solution

The fourth proportional to 264,479.23, 396,634.59 and 86,945.32 is: 130,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,479.23 : 396,634.59 = 86,945.32 : x
  2. Step 2: Convert to fraction form
    264,479.23/396,634.59 = 86,945.32/x
  3. Step 3: Cross multiply
    264,479.23x = 396,634.59 × 86,945.32
  4. Step 4: Simplify right side
    264,479.23x = 34,485,520,032.99
  5. Step 5: Solve for x
    x = 34,485,520,032.99/264,479.23
  6. Step 6: Final answer
    x = 130,390.28

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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.