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Finding the Fourth Proportional to 214,479, 321,740.37 and 74,237.22

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Solution

The fourth proportional to 214,479, 321,740.37 and 74,237.22 is: 111,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,479 : 321,740.37 = 74,237.22 : x
  2. Step 2: Convert to fraction form
    214,479/321,740.37 = 74,237.22/x
  3. Step 3: Cross multiply
    214,479x = 321,740.37 × 74,237.22
  4. Step 4: Simplify right side
    214,479x = 23,885,110,630.57
  5. Step 5: Solve for x
    x = 23,885,110,630.57/214,479
  6. Step 6: Final answer
    x = 111,363.40

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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.