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Finding the Fourth Proportional to 377,321.94, 520,656.93 and 255,080.25

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Solution

The fourth proportional to 377,321.94, 520,656.93 and 255,080.25 is: 351,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,321.94 : 520,656.93 = 255,080.25 : x
  2. Step 2: Convert to fraction form
    377,321.94/520,656.93 = 255,080.25/x
  3. Step 3: Cross multiply
    377,321.94x = 520,656.93 × 255,080.25
  4. Step 4: Simplify right side
    377,321.94x = 132,809,299,868.63
  5. Step 5: Solve for x
    x = 132,809,299,868.63/377,321.94
  6. Step 6: Final answer
    x = 351,978.74

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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.