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Finding the Fourth Proportional to 214,612.38, 321,673.68 and 86,446.59

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Solution

The fourth proportional to 214,612.38, 321,673.68 and 86,446.59 is: 129,571.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,612.38 : 321,673.68 = 86,446.59 : x
  2. Step 2: Convert to fraction form
    214,612.38/321,673.68 = 86,446.59/x
  3. Step 3: Cross multiply
    214,612.38x = 321,673.68 × 86,446.59
  4. Step 4: Simplify right side
    214,612.38x = 27,807,593,696.59
  5. Step 5: Solve for x
    x = 27,807,593,696.59/214,612.38
  6. Step 6: Final answer
    x = 129,571.25

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1.5x scale

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.