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Finding the Fourth Proportional to 455,217.32, 628,199.96 and 251,268.30

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Solution

The fourth proportional to 455,217.32, 628,199.96 and 251,268.30 is: 346,750.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,217.32 : 628,199.96 = 251,268.30 : x
  2. Step 2: Convert to fraction form
    455,217.32/628,199.96 = 251,268.30/x
  3. Step 3: Cross multiply
    455,217.32x = 628,199.96 × 251,268.30
  4. Step 4: Simplify right side
    455,217.32x = 157,846,734,752.93
  5. Step 5: Solve for x
    x = 157,846,734,752.93/455,217.32
  6. Step 6: Final answer
    x = 346,750.28

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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.