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Finding the Fourth Proportional to 455,659.74, 628,756.54 and 251,698.42

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Solution

The fourth proportional to 455,659.74, 628,756.54 and 251,698.42 is: 347,314.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,659.74 : 628,756.54 = 251,698.42 : x
  2. Step 2: Convert to fraction form
    455,659.74/628,756.54 = 251,698.42/x
  3. Step 3: Cross multiply
    455,659.74x = 628,756.54 × 251,698.42
  4. Step 4: Simplify right side
    455,659.74x = 158,257,027,682.67
  5. Step 5: Solve for x
    x = 158,257,027,682.67/455,659.74
  6. Step 6: Final answer
    x = 347,314.05

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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.