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Finding the Fourth Proportional to 455,241.90, 628,233.94 and 251,292.95

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Solution

The fourth proportional to 455,241.90, 628,233.94 and 251,292.95 is: 346,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,241.90 : 628,233.94 = 251,292.95 : x
  2. Step 2: Convert to fraction form
    455,241.90/628,233.94 = 251,292.95/x
  3. Step 3: Cross multiply
    455,241.90x = 628,233.94 × 251,292.95
  4. Step 4: Simplify right side
    455,241.90x = 157,870,759,601.55
  5. Step 5: Solve for x
    x = 157,870,759,601.55/455,241.90
  6. Step 6: Final answer
    x = 346,784.34

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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.