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Finding the Fourth Proportional to 455,766.75, 628,970.82 and 251,830.80

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Solution

The fourth proportional to 455,766.75, 628,970.82 and 251,830.80 is: 347,533.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,766.75 : 628,970.82 = 251,830.80 : x
  2. Step 2: Convert to fraction form
    455,766.75/628,970.82 = 251,830.80/x
  3. Step 3: Cross multiply
    455,766.75x = 628,970.82 × 251,830.80
  4. Step 4: Simplify right side
    455,766.75x = 158,394,224,777.26
  5. Step 5: Solve for x
    x = 158,394,224,777.26/455,766.75
  6. Step 6: Final answer
    x = 347,533.52

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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.