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Finding the Fourth Proportional to 548,378.55, 756,757.22 and 306,658.35

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Solution

The fourth proportional to 548,378.55, 756,757.22 and 306,658.35 is: 423,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,378.55 : 756,757.22 = 306,658.35 : x
  2. Step 2: Convert to fraction form
    548,378.55/756,757.22 = 306,658.35/x
  3. Step 3: Cross multiply
    548,378.55x = 756,757.22 × 306,658.35
  4. Step 4: Simplify right side
    548,378.55x = 232,065,918,902.50
  5. Step 5: Solve for x
    x = 232,065,918,902.50/548,378.55
  6. Step 6: Final answer
    x = 423,185.62

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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.