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Finding the Fourth Proportional to 218,370.30, 301,326.45 and 122,874.90

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Solution

The fourth proportional to 218,370.30, 301,326.45 and 122,874.90 is: 169,553.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,370.30 : 301,326.45 = 122,874.90 : x
  2. Step 2: Convert to fraction form
    218,370.30/301,326.45 = 122,874.90/x
  3. Step 3: Cross multiply
    218,370.30x = 301,326.45 × 122,874.90
  4. Step 4: Simplify right side
    218,370.30x = 37,025,457,411.11
  5. Step 5: Solve for x
    x = 37,025,457,411.11/218,370.30
  6. Step 6: Final answer
    x = 169,553.54

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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.