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Finding the Fourth Proportional to 455,659.01, 628,814.70 and 251,705.70

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Solution

The fourth proportional to 455,659.01, 628,814.70 and 251,705.70 is: 347,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,659.01 : 628,814.70 = 251,705.70 : x
  2. Step 2: Convert to fraction form
    455,659.01/628,814.70 = 251,705.70/x
  3. Step 3: Cross multiply
    455,659.01x = 628,814.70 × 251,705.70
  4. Step 4: Simplify right side
    455,659.01x = 158,276,245,177.69
  5. Step 5: Solve for x
    x = 158,276,245,177.69/455,659.01
  6. Step 6: Final answer
    x = 347,356.78

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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.