Home / 309,910.38-427,679.49-173,941.60

Finding the Fourth Proportional to 309,910.38, 427,679.49 and 173,941.60

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Solution

The fourth proportional to 309,910.38, 427,679.49 and 173,941.60 is: 240,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,910.38 : 427,679.49 = 173,941.60 : x
  2. Step 2: Convert to fraction form
    309,910.38/427,679.49 = 173,941.60/x
  3. Step 3: Cross multiply
    309,910.38x = 427,679.49 × 173,941.60
  4. Step 4: Simplify right side
    309,910.38x = 74,391,256,365.61
  5. Step 5: Solve for x
    x = 74,391,256,365.61/309,910.38
  6. Step 6: Final answer
    x = 240,041.19

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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.