Home / 309,600.20-427,243.54-173,634.12

Finding the Fourth Proportional to 309,600.20, 427,243.54 and 173,634.12

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Solution

The fourth proportional to 309,600.20, 427,243.54 and 173,634.12 is: 239,612.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,600.20 : 427,243.54 = 173,634.12 : x
  2. Step 2: Convert to fraction form
    309,600.20/427,243.54 = 173,634.12/x
  3. Step 3: Cross multiply
    309,600.20x = 427,243.54 × 173,634.12
  4. Step 4: Simplify right side
    309,600.20x = 74,184,056,093.58
  5. Step 5: Solve for x
    x = 74,184,056,093.58/309,600.20
  6. Step 6: Final answer
    x = 239,612.43

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1.5x scale

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.