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Finding the Fourth Proportional to 321,098.60, 481,502.10 and 121,352.60

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Solution

The fourth proportional to 321,098.60, 481,502.10 and 121,352.60 is: 181,973.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,098.60 : 481,502.10 = 121,352.60 : x
  2. Step 2: Convert to fraction form
    321,098.60/481,502.10 = 121,352.60/x
  3. Step 3: Cross multiply
    321,098.60x = 481,502.10 × 121,352.60
  4. Step 4: Simplify right side
    321,098.60x = 58,431,531,740.46
  5. Step 5: Solve for x
    x = 58,431,531,740.46/321,098.60
  6. Step 6: Final answer
    x = 181,973.80

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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.