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Finding the Fourth Proportional to 214,396.60, 321,641.10 and 72,256.12

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Solution

The fourth proportional to 214,396.60, 321,641.10 and 72,256.12 is: 108,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,396.60 : 321,641.10 = 72,256.12 : x
  2. Step 2: Convert to fraction form
    214,396.60/321,641.10 = 72,256.12/x
  3. Step 3: Cross multiply
    214,396.60x = 321,641.10 × 72,256.12
  4. Step 4: Simplify right side
    214,396.60x = 23,240,537,918.53
  5. Step 5: Solve for x
    x = 23,240,537,918.53/214,396.60
  6. Step 6: Final answer
    x = 108,399.75

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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.