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Finding the Fourth Proportional to 322,485.78, 445,229.55 and 207,804.90

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Solution

The fourth proportional to 322,485.78, 445,229.55 and 207,804.90 is: 286,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,485.78 : 445,229.55 = 207,804.90 : x
  2. Step 2: Convert to fraction form
    322,485.78/445,229.55 = 207,804.90/x
  3. Step 3: Cross multiply
    322,485.78x = 445,229.55 × 207,804.90
  4. Step 4: Simplify right side
    322,485.78x = 92,520,882,114.80
  5. Step 5: Solve for x
    x = 92,520,882,114.80/322,485.78
  6. Step 6: Final answer
    x = 286,899.11

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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.