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Finding the Fourth Proportional to 455,766.59, 628,954.20 and 251,816.87

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Solution

The fourth proportional to 455,766.59, 628,954.20 and 251,816.87 is: 347,505.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,766.59 : 628,954.20 = 251,816.87 : x
  2. Step 2: Convert to fraction form
    455,766.59/628,954.20 = 251,816.87/x
  3. Step 3: Cross multiply
    455,766.59x = 628,954.20 × 251,816.87
  4. Step 4: Simplify right side
    455,766.59x = 158,381,278,017.35
  5. Step 5: Solve for x
    x = 158,381,278,017.35/455,766.59
  6. Step 6: Final answer
    x = 347,505.24

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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.