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Finding the Fourth Proportional to 456,019.20, 629,305.20 and 254,815.20

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Solution

The fourth proportional to 456,019.20, 629,305.20 and 254,815.20 is: 351,644.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,019.20 : 629,305.20 = 254,815.20 : x
  2. Step 2: Convert to fraction form
    456,019.20/629,305.20 = 254,815.20/x
  3. Step 3: Cross multiply
    456,019.20x = 629,305.20 × 254,815.20
  4. Step 4: Simplify right side
    456,019.20x = 160,356,530,399.04
  5. Step 5: Solve for x
    x = 160,356,530,399.04/456,019.20
  6. Step 6: Final answer
    x = 351,644.25

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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.