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Finding the Fourth Proportional to 455,401.88, 628,464.58 and 251,452.25

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Solution

The fourth proportional to 455,401.88, 628,464.58 and 251,452.25 is: 347,009.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,401.88 : 628,464.58 = 251,452.25 : x
  2. Step 2: Convert to fraction form
    455,401.88/628,464.58 = 251,452.25/x
  3. Step 3: Cross multiply
    455,401.88x = 628,464.58 × 251,452.25
  4. Step 4: Simplify right side
    455,401.88x = 158,028,828,915.35
  5. Step 5: Solve for x
    x = 158,028,828,915.35/455,401.88
  6. Step 6: Final answer
    x = 347,009.61

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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.