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Finding the Fourth Proportional to 273,879.60, 410,819.40 and 86,891.10

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Solution

The fourth proportional to 273,879.60, 410,819.40 and 86,891.10 is: 130,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,879.60 : 410,819.40 = 86,891.10 : x
  2. Step 2: Convert to fraction form
    273,879.60/410,819.40 = 86,891.10/x
  3. Step 3: Cross multiply
    273,879.60x = 410,819.40 × 86,891.10
  4. Step 4: Simplify right side
    273,879.60x = 35,696,549,567.34
  5. Step 5: Solve for x
    x = 35,696,549,567.34/273,879.60
  6. Step 6: Final answer
    x = 130,336.65

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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.