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Finding the Fourth Proportional to 321,018.48, 481,264.92 and 121,225.44

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Solution

The fourth proportional to 321,018.48, 481,264.92 and 121,225.44 is: 181,738.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,018.48 : 481,264.92 = 121,225.44 : x
  2. Step 2: Convert to fraction form
    321,018.48/481,264.92 = 121,225.44/x
  3. Step 3: Cross multiply
    321,018.48x = 481,264.92 × 121,225.44
  4. Step 4: Simplify right side
    321,018.48x = 58,341,551,683.56
  5. Step 5: Solve for x
    x = 58,341,551,683.56/321,018.48
  6. Step 6: Final answer
    x = 181,738.92

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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.