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Finding the Fourth Proportional to 395,396.98, 545,780.91 and 240,347.73

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Solution

The fourth proportional to 395,396.98, 545,780.91 and 240,347.73 is: 331,760.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,396.98 : 545,780.91 = 240,347.73 : x
  2. Step 2: Convert to fraction form
    395,396.98/545,780.91 = 240,347.73/x
  3. Step 3: Cross multiply
    395,396.98x = 545,780.91 × 240,347.73
  4. Step 4: Simplify right side
    395,396.98x = 131,177,202,795.83
  5. Step 5: Solve for x
    x = 131,177,202,795.83/395,396.98
  6. Step 6: Final answer
    x = 331,760.76

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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.