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Finding the Fourth Proportional to 551,144.28, 760,593.06 and 309,445.68

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Solution

The fourth proportional to 551,144.28, 760,593.06 and 309,445.68 is: 427,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,144.28 : 760,593.06 = 309,445.68 : x
  2. Step 2: Convert to fraction form
    551,144.28/760,593.06 = 309,445.68/x
  3. Step 3: Cross multiply
    551,144.28x = 760,593.06 × 309,445.68
  4. Step 4: Simplify right side
    551,144.28x = 235,362,236,654.98
  5. Step 5: Solve for x
    x = 235,362,236,654.98/551,144.28
  6. Step 6: Final answer
    x = 427,042.87

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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.