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Finding the Fourth Proportional to 391,588.02, 540,380.97 and 230,452.56

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Solution

The fourth proportional to 391,588.02, 540,380.97 and 230,452.56 is: 318,018.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,588.02 : 540,380.97 = 230,452.56 : x
  2. Step 2: Convert to fraction form
    391,588.02/540,380.97 = 230,452.56/x
  3. Step 3: Cross multiply
    391,588.02x = 540,380.97 × 230,452.56
  4. Step 4: Simplify right side
    391,588.02x = 124,532,177,911.78
  5. Step 5: Solve for x
    x = 124,532,177,911.78/391,588.02
  6. Step 6: Final answer
    x = 318,018.35

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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.