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Finding the Fourth Proportional to 422,480.20, 633,950.70 and 173,187.40

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Solution

The fourth proportional to 422,480.20, 633,950.70 and 173,187.40 is: 259,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,480.20 : 633,950.70 = 173,187.40 : x
  2. Step 2: Convert to fraction form
    422,480.20/633,950.70 = 173,187.40/x
  3. Step 3: Cross multiply
    422,480.20x = 633,950.70 × 173,187.40
  4. Step 4: Simplify right side
    422,480.20x = 109,792,273,461.18
  5. Step 5: Solve for x
    x = 109,792,273,461.18/422,480.20
  6. Step 6: Final answer
    x = 259,875.55

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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.