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Finding the Fourth Proportional to 321,901.80, 482,660.70 and 197,332.20

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Solution

The fourth proportional to 321,901.80, 482,660.70 and 197,332.20 is: 295,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,901.80 : 482,660.70 = 197,332.20 : x
  2. Step 2: Convert to fraction form
    321,901.80/482,660.70 = 197,332.20/x
  3. Step 3: Cross multiply
    321,901.80x = 482,660.70 × 197,332.20
  4. Step 4: Simplify right side
    321,901.80x = 95,244,497,784.54
  5. Step 5: Solve for x
    x = 95,244,497,784.54/321,901.80
  6. Step 6: Final answer
    x = 295,880.60

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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.