Home / 319,278.33-478,778.69-91,523.79

Finding the Fourth Proportional to 319,278.33, 478,778.69 and 91,523.79

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Solution

The fourth proportional to 319,278.33, 478,778.69 and 91,523.79 is: 137,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,278.33 : 478,778.69 = 91,523.79 : x
  2. Step 2: Convert to fraction form
    319,278.33/478,778.69 = 91,523.79/x
  3. Step 3: Cross multiply
    319,278.33x = 478,778.69 × 91,523.79
  4. Step 4: Simplify right side
    319,278.33x = 43,819,640,508.84
  5. Step 5: Solve for x
    x = 43,819,640,508.84/319,278.33
  6. Step 6: Final answer
    x = 137,245.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.