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Finding the Fourth Proportional to 321,866.60, 482,799.90 and 134,858.60

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Solution

The fourth proportional to 321,866.60, 482,799.90 and 134,858.60 is: 202,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,866.60 : 482,799.90 = 134,858.60 : x
  2. Step 2: Convert to fraction form
    321,866.60/482,799.90 = 134,858.60/x
  3. Step 3: Cross multiply
    321,866.60x = 482,799.90 × 134,858.60
  4. Step 4: Simplify right side
    321,866.60x = 65,109,718,594.14
  5. Step 5: Solve for x
    x = 65,109,718,594.14/321,866.60
  6. Step 6: Final answer
    x = 202,287.90

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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.