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Finding the Fourth Proportional to 641,322.80, 961,757.40 and 220,500.80

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Solution

The fourth proportional to 641,322.80, 961,757.40 and 220,500.80 is: 330,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,322.80 : 961,757.40 = 220,500.80 : x
  2. Step 2: Convert to fraction form
    641,322.80/961,757.40 = 220,500.80/x
  3. Step 3: Cross multiply
    641,322.80x = 961,757.40 × 220,500.80
  4. Step 4: Simplify right side
    641,322.80x = 212,068,276,105.92
  5. Step 5: Solve for x
    x = 212,068,276,105.92/641,322.80
  6. Step 6: Final answer
    x = 330,673.22

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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.