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Finding the Fourth Proportional to 395,381.40, 545,591.61 and 234,209.22

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Solution

The fourth proportional to 395,381.40, 545,591.61 and 234,209.22 is: 323,188.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,381.40 : 545,591.61 = 234,209.22 : x
  2. Step 2: Convert to fraction form
    395,381.40/545,591.61 = 234,209.22/x
  3. Step 3: Cross multiply
    395,381.40x = 545,591.61 × 234,209.22
  4. Step 4: Simplify right side
    395,381.40x = 127,782,585,416.64
  5. Step 5: Solve for x
    x = 127,782,585,416.64/395,381.40
  6. Step 6: Final answer
    x = 323,188.16

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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.