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Finding the Fourth Proportional to 377,388.02, 520,794.69 and 207,621.74

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Solution

The fourth proportional to 377,388.02, 520,794.69 and 207,621.74 is: 286,517.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,388.02 : 520,794.69 = 207,621.74 : x
  2. Step 2: Convert to fraction form
    377,388.02/520,794.69 = 207,621.74/x
  3. Step 3: Cross multiply
    377,388.02x = 520,794.69 × 207,621.74
  4. Step 4: Simplify right side
    377,388.02x = 108,128,299,720.56
  5. Step 5: Solve for x
    x = 108,128,299,720.56/377,388.02
  6. Step 6: Final answer
    x = 286,517.57

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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.