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Finding the Fourth Proportional to 664,288.80, 996,530.40 and 214,933.20

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Solution

The fourth proportional to 664,288.80, 996,530.40 and 214,933.20 is: 322,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,288.80 : 996,530.40 = 214,933.20 : x
  2. Step 2: Convert to fraction form
    664,288.80/996,530.40 = 214,933.20/x
  3. Step 3: Cross multiply
    664,288.80x = 996,530.40 × 214,933.20
  4. Step 4: Simplify right side
    664,288.80x = 214,187,467,769.28
  5. Step 5: Solve for x
    x = 214,187,467,769.28/664,288.80
  6. Step 6: Final answer
    x = 322,431.25

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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.