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Finding the Fourth Proportional to 626,512.80, 939,769.20 and 205,687.20

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Solution

The fourth proportional to 626,512.80, 939,769.20 and 205,687.20 is: 308,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,512.80 : 939,769.20 = 205,687.20 : x
  2. Step 2: Convert to fraction form
    626,512.80/939,769.20 = 205,687.20/x
  3. Step 3: Cross multiply
    626,512.80x = 939,769.20 × 205,687.20
  4. Step 4: Simplify right side
    626,512.80x = 193,298,495,394.24
  5. Step 5: Solve for x
    x = 193,298,495,394.24/626,512.80
  6. Step 6: Final answer
    x = 308,530.80

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Similar ratio
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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.