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Finding the Fourth Proportional to 442,992.80, 611,117.52 and 321,946.40

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Solution

The fourth proportional to 442,992.80, 611,117.52 and 321,946.40 is: 444,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,992.80 : 611,117.52 = 321,946.40 : x
  2. Step 2: Convert to fraction form
    442,992.80/611,117.52 = 321,946.40/x
  3. Step 3: Cross multiply
    442,992.80x = 611,117.52 × 321,946.40
  4. Step 4: Simplify right side
    442,992.80x = 196,747,085,540.93
  5. Step 5: Solve for x
    x = 196,747,085,540.93/442,992.80
  6. Step 6: Final answer
    x = 444,131.56

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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.