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Finding the Fourth Proportional to 391,933.03, 540,851.82 and 230,794.87

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Solution

The fourth proportional to 391,933.03, 540,851.82 and 230,794.87 is: 318,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,933.03 : 540,851.82 = 230,794.87 : x
  2. Step 2: Convert to fraction form
    391,933.03/540,851.82 = 230,794.87/x
  3. Step 3: Cross multiply
    391,933.03x = 540,851.82 × 230,794.87
  4. Step 4: Simplify right side
    391,933.03x = 124,825,825,486.16
  5. Step 5: Solve for x
    x = 124,825,825,486.16/391,933.03
  6. Step 6: Final answer
    x = 318,487.64

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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.