Home / 393,278.22-587,249.60-312,408.50

Finding the Fourth Proportional to 393,278.22, 587,249.60 and 312,408.50

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Solution

The fourth proportional to 393,278.22, 587,249.60 and 312,408.50 is: 466,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,278.22 : 587,249.60 = 312,408.50 : x
  2. Step 2: Convert to fraction form
    393,278.22/587,249.60 = 312,408.50/x
  3. Step 3: Cross multiply
    393,278.22x = 587,249.60 × 312,408.50
  4. Step 4: Simplify right side
    393,278.22x = 183,461,762,163.31
  5. Step 5: Solve for x
    x = 183,461,762,163.31/393,278.22
  6. Step 6: Final answer
    x = 466,493.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.