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Finding the Fourth Proportional to 442,998.80, 611,125.80 and 321,952.40

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Solution

The fourth proportional to 442,998.80, 611,125.80 and 321,952.40 is: 444,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,998.80 : 611,125.80 = 321,952.40 : x
  2. Step 2: Convert to fraction form
    442,998.80/611,125.80 = 321,952.40/x
  3. Step 3: Cross multiply
    442,998.80x = 611,125.80 × 321,952.40
  4. Step 4: Simplify right side
    442,998.80x = 196,753,418,011.92
  5. Step 5: Solve for x
    x = 196,753,418,011.92/442,998.80
  6. Step 6: Final answer
    x = 444,139.84

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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.