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Finding the Fourth Proportional to 422,092.80, 632,601.60 and 172,492.80

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Solution

The fourth proportional to 422,092.80, 632,601.60 and 172,492.80 is: 258,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,092.80 : 632,601.60 = 172,492.80 : x
  2. Step 2: Convert to fraction form
    422,092.80/632,601.60 = 172,492.80/x
  3. Step 3: Cross multiply
    422,092.80x = 632,601.60 × 172,492.80
  4. Step 4: Simplify right side
    422,092.80x = 109,119,221,268.48
  5. Step 5: Solve for x
    x = 109,119,221,268.48/422,092.80
  6. Step 6: Final answer
    x = 258,519.50

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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.