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Finding the Fourth Proportional to 321,657.60, 443,907.60 and 185,716.48

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Solution

The fourth proportional to 321,657.60, 443,907.60 and 185,716.48 is: 256,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,657.60 : 443,907.60 = 185,716.48 : x
  2. Step 2: Convert to fraction form
    321,657.60/443,907.60 = 185,716.48/x
  3. Step 3: Cross multiply
    321,657.60x = 443,907.60 × 185,716.48
  4. Step 4: Simplify right side
    321,657.60x = 82,440,956,917.25
  5. Step 5: Solve for x
    x = 82,440,956,917.25/321,657.60
  6. Step 6: Final answer
    x = 256,300.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.