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Finding the Fourth Proportional to 214,986.60, 322,479.90 and 136,189.80

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Solution

The fourth proportional to 214,986.60, 322,479.90 and 136,189.80 is: 204,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,986.60 : 322,479.90 = 136,189.80 : x
  2. Step 2: Convert to fraction form
    214,986.60/322,479.90 = 136,189.80/x
  3. Step 3: Cross multiply
    214,986.60x = 322,479.90 × 136,189.80
  4. Step 4: Simplify right side
    214,986.60x = 43,918,473,085.02
  5. Step 5: Solve for x
    x = 43,918,473,085.02/214,986.60
  6. Step 6: Final answer
    x = 204,284.70

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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.