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Finding the Fourth Proportional to 257,233.80, 385,850.70 and 70,245.30

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Solution

The fourth proportional to 257,233.80, 385,850.70 and 70,245.30 is: 105,367.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,233.80 : 385,850.70 = 70,245.30 : x
  2. Step 2: Convert to fraction form
    257,233.80/385,850.70 = 70,245.30/x
  3. Step 3: Cross multiply
    257,233.80x = 385,850.70 × 70,245.30
  4. Step 4: Simplify right side
    257,233.80x = 27,104,198,176.71
  5. Step 5: Solve for x
    x = 27,104,198,176.71/257,233.80
  6. Step 6: Final answer
    x = 105,367.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.