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Finding the Fourth Proportional to 455,280.46, 628,254.74 and 251,298.64

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Solution

The fourth proportional to 455,280.46, 628,254.74 and 251,298.64 is: 346,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,280.46 : 628,254.74 = 251,298.64 : x
  2. Step 2: Convert to fraction form
    455,280.46/628,254.74 = 251,298.64/x
  3. Step 3: Cross multiply
    455,280.46x = 628,254.74 × 251,298.64
  4. Step 4: Simplify right side
    455,280.46x = 157,879,561,735.55
  5. Step 5: Solve for x
    x = 157,879,561,735.55/455,280.46
  6. Step 6: Final answer
    x = 346,774.30

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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.