Home / 391,629.90-540,408.61-230,475.34

Finding the Fourth Proportional to 391,629.90, 540,408.61 and 230,475.34

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Solution

The fourth proportional to 391,629.90, 540,408.61 and 230,475.34 is: 318,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,629.90 : 540,408.61 = 230,475.34 : x
  2. Step 2: Convert to fraction form
    391,629.90/540,408.61 = 230,475.34/x
  3. Step 3: Cross multiply
    391,629.90x = 540,408.61 × 230,475.34
  4. Step 4: Simplify right side
    391,629.90x = 124,550,858,128.68
  5. Step 5: Solve for x
    x = 124,550,858,128.68/391,629.90
  6. Step 6: Final answer
    x = 318,032.05

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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.