Home / 321,729.40-482,500.08-121,905.64

Finding the Fourth Proportional to 321,729.40, 482,500.08 and 121,905.64

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Solution

The fourth proportional to 321,729.40, 482,500.08 and 121,905.64 is: 182,822.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,729.40 : 482,500.08 = 121,905.64 : x
  2. Step 2: Convert to fraction form
    321,729.40/482,500.08 = 121,905.64/x
  3. Step 3: Cross multiply
    321,729.40x = 482,500.08 × 121,905.64
  4. Step 4: Simplify right side
    321,729.40x = 58,819,481,052.45
  5. Step 5: Solve for x
    x = 58,819,481,052.45/321,729.40
  6. Step 6: Final answer
    x = 182,822.84

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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.