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Finding the Fourth Proportional to 310,129.64, 427,977.27 and 174,169.31

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Solution

The fourth proportional to 310,129.64, 427,977.27 and 174,169.31 is: 240,352.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,129.64 : 427,977.27 = 174,169.31 : x
  2. Step 2: Convert to fraction form
    310,129.64/427,977.27 = 174,169.31/x
  3. Step 3: Cross multiply
    310,129.64x = 427,977.27 × 174,169.31
  4. Step 4: Simplify right side
    310,129.64x = 74,540,505,811.58
  5. Step 5: Solve for x
    x = 74,540,505,811.58/310,129.64
  6. Step 6: Final answer
    x = 240,352.73

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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.