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Finding the Fourth Proportional to 367,621.07, 551,039.56 and 209,509.07

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Solution

The fourth proportional to 367,621.07, 551,039.56 and 209,509.07 is: 314,040.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,621.07 : 551,039.56 = 209,509.07 : x
  2. Step 2: Convert to fraction form
    367,621.07/551,039.56 = 209,509.07/x
  3. Step 3: Cross multiply
    367,621.07x = 551,039.56 × 209,509.07
  4. Step 4: Simplify right side
    367,621.07x = 115,447,782,469.84
  5. Step 5: Solve for x
    x = 115,447,782,469.84/367,621.07
  6. Step 6: Final answer
    x = 314,040.17

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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.