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Finding the Fourth Proportional to 548,493.21, 756,615.98 and 319,024.67

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Solution

The fourth proportional to 548,493.21, 756,615.98 and 319,024.67 is: 440,076.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,493.21 : 756,615.98 = 319,024.67 : x
  2. Step 2: Convert to fraction form
    548,493.21/756,615.98 = 319,024.67/x
  3. Step 3: Cross multiply
    548,493.21x = 756,615.98 × 319,024.67
  4. Step 4: Simplify right side
    548,493.21x = 241,379,157,958.02
  5. Step 5: Solve for x
    x = 241,379,157,958.02/548,493.21
  6. Step 6: Final answer
    x = 440,076.84

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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.