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Finding the Fourth Proportional to 322,640.20, 483,960.30 and 98,000.20

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Solution

The fourth proportional to 322,640.20, 483,960.30 and 98,000.20 is: 147,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,640.20 : 483,960.30 = 98,000.20 : x
  2. Step 2: Convert to fraction form
    322,640.20/483,960.30 = 98,000.20/x
  3. Step 3: Cross multiply
    322,640.20x = 483,960.30 × 98,000.20
  4. Step 4: Simplify right side
    322,640.20x = 47,428,206,192.06
  5. Step 5: Solve for x
    x = 47,428,206,192.06/322,640.20
  6. Step 6: Final answer
    x = 147,000.30

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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.