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Finding the Fourth Proportional to 551,697.27, 761,361.99 and 309,975.14

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Solution

The fourth proportional to 551,697.27, 761,361.99 and 309,975.14 is: 427,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,697.27 : 761,361.99 = 309,975.14 : x
  2. Step 2: Convert to fraction form
    551,697.27/761,361.99 = 309,975.14/x
  3. Step 3: Cross multiply
    551,697.27x = 761,361.99 × 309,975.14
  4. Step 4: Simplify right side
    551,697.27x = 236,003,289,440.93
  5. Step 5: Solve for x
    x = 236,003,289,440.93/551,697.27
  6. Step 6: Final answer
    x = 427,776.79

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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.