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Finding the Fourth Proportional to 455,276.66, 628,237.01 and 251,314.42

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Solution

The fourth proportional to 455,276.66, 628,237.01 and 251,314.42 is: 346,789.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,276.66 : 628,237.01 = 251,314.42 : x
  2. Step 2: Convert to fraction form
    455,276.66/628,237.01 = 251,314.42/x
  3. Step 3: Cross multiply
    455,276.66x = 628,237.01 × 251,314.42
  4. Step 4: Simplify right side
    455,276.66x = 157,885,021,793.24
  5. Step 5: Solve for x
    x = 157,885,021,793.24/455,276.66
  6. Step 6: Final answer
    x = 346,789.18

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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.