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Finding the Fourth Proportional to 264,043.30, 396,064.95 and 86,556.10

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Solution

The fourth proportional to 264,043.30, 396,064.95 and 86,556.10 is: 129,834.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,043.30 : 396,064.95 = 86,556.10 : x
  2. Step 2: Convert to fraction form
    264,043.30/396,064.95 = 86,556.10/x
  3. Step 3: Cross multiply
    264,043.30x = 396,064.95 × 86,556.10
  4. Step 4: Simplify right side
    264,043.30x = 34,281,837,418.70
  5. Step 5: Solve for x
    x = 34,281,837,418.70/264,043.30
  6. Step 6: Final answer
    x = 129,834.15

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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.