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Finding the Fourth Proportional to 309,751.94, 427,449.48 and 173,774.54

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Solution

The fourth proportional to 309,751.94, 427,449.48 and 173,774.54 is: 239,804.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,751.94 : 427,449.48 = 173,774.54 : x
  2. Step 2: Convert to fraction form
    309,751.94/427,449.48 = 173,774.54/x
  3. Step 3: Cross multiply
    309,751.94x = 427,449.48 × 173,774.54
  4. Step 4: Simplify right side
    309,751.94x = 74,279,836,760.24
  5. Step 5: Solve for x
    x = 74,279,836,760.24/309,751.94
  6. Step 6: Final answer
    x = 239,804.27

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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.