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Finding the Fourth Proportional to 455,279.60, 628,282.40 and 251,330.60

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Solution

The fourth proportional to 455,279.60, 628,282.40 and 251,330.60 is: 346,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,279.60 : 628,282.40 = 251,330.60 : x
  2. Step 2: Convert to fraction form
    455,279.60/628,282.40 = 251,330.60/x
  3. Step 3: Cross multiply
    455,279.60x = 628,282.40 × 251,330.60
  4. Step 4: Simplify right side
    455,279.60x = 157,906,592,561.44
  5. Step 5: Solve for x
    x = 157,906,592,561.44/455,279.60
  6. Step 6: Final answer
    x = 346,834.32

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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.