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Finding the Fourth Proportional to 483,532.30, 667,121.79 and 289,900.18

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Solution

The fourth proportional to 483,532.30, 667,121.79 and 289,900.18 is: 399,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,532.30 : 667,121.79 = 289,900.18 : x
  2. Step 2: Convert to fraction form
    483,532.30/667,121.79 = 289,900.18/x
  3. Step 3: Cross multiply
    483,532.30x = 667,121.79 × 289,900.18
  4. Step 4: Simplify right side
    483,532.30x = 193,398,727,002.92
  5. Step 5: Solve for x
    x = 193,398,727,002.92/483,532.30
  6. Step 6: Final answer
    x = 399,970.65

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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.