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Finding the Fourth Proportional to 391,775.33, 540,727.49 and 254,124.84

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Solution

The fourth proportional to 391,775.33, 540,727.49 and 254,124.84 is: 350,742.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,775.33 : 540,727.49 = 254,124.84 : x
  2. Step 2: Convert to fraction form
    391,775.33/540,727.49 = 254,124.84/x
  3. Step 3: Cross multiply
    391,775.33x = 540,727.49 × 254,124.84
  4. Step 4: Simplify right side
    391,775.33x = 137,412,286,879.85
  5. Step 5: Solve for x
    x = 137,412,286,879.85/391,775.33
  6. Step 6: Final answer
    x = 350,742.57

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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.