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Finding the Fourth Proportional to 322,047.90, 445,200.30 and 245,940.30

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Solution

The fourth proportional to 322,047.90, 445,200.30 and 245,940.30 is: 339,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,047.90 : 445,200.30 = 245,940.30 : x
  2. Step 2: Convert to fraction form
    322,047.90/445,200.30 = 245,940.30/x
  3. Step 3: Cross multiply
    322,047.90x = 445,200.30 × 245,940.30
  4. Step 4: Simplify right side
    322,047.90x = 109,492,695,342.09
  5. Step 5: Solve for x
    x = 109,492,695,342.09/322,047.90
  6. Step 6: Final answer
    x = 339,988.85

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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.