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Finding the Fourth Proportional to 321,303.60, 481,609.80 and 121,546.80

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Solution

The fourth proportional to 321,303.60, 481,609.80 and 121,546.80 is: 182,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,303.60 : 481,609.80 = 121,546.80 : x
  2. Step 2: Convert to fraction form
    321,303.60/481,609.80 = 121,546.80/x
  3. Step 3: Cross multiply
    321,303.60x = 481,609.80 × 121,546.80
  4. Step 4: Simplify right side
    321,303.60x = 58,538,130,038.64
  5. Step 5: Solve for x
    x = 58,538,130,038.64/321,303.60
  6. Step 6: Final answer
    x = 182,189.46

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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.