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Finding the Fourth Proportional to 455,279.53, 628,269.29 and 251,326.07

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Solution

The fourth proportional to 455,279.53, 628,269.29 and 251,326.07 is: 346,820.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,279.53 : 628,269.29 = 251,326.07 : x
  2. Step 2: Convert to fraction form
    455,279.53/628,269.29 = 251,326.07/x
  3. Step 3: Cross multiply
    455,279.53x = 628,269.29 × 251,326.07
  4. Step 4: Simplify right side
    455,279.53x = 157,900,453,991.91
  5. Step 5: Solve for x
    x = 157,900,453,991.91/455,279.53
  6. Step 6: Final answer
    x = 346,820.89

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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.