Home / 320,945.89-442,920.54-193,618.75

Finding the Fourth Proportional to 320,945.89, 442,920.54 and 193,618.75

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Solution

The fourth proportional to 320,945.89, 442,920.54 and 193,618.75 is: 267,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,945.89 : 442,920.54 = 193,618.75 : x
  2. Step 2: Convert to fraction form
    320,945.89/442,920.54 = 193,618.75/x
  3. Step 3: Cross multiply
    320,945.89x = 442,920.54 × 193,618.75
  4. Step 4: Simplify right side
    320,945.89x = 85,757,721,304.13
  5. Step 5: Solve for x
    x = 85,757,721,304.13/320,945.89
  6. Step 6: Final answer
    x = 267,203.05

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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.