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Finding the Fourth Proportional to 455,164.46, 628,123.84 and 251,215.36

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Solution

The fourth proportional to 455,164.46, 628,123.84 and 251,215.36 is: 346,675.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,164.46 : 628,123.84 = 251,215.36 : x
  2. Step 2: Convert to fraction form
    455,164.46/628,123.84 = 251,215.36/x
  3. Step 3: Cross multiply
    455,164.46x = 628,123.84 × 251,215.36
  4. Step 4: Simplify right side
    455,164.46x = 157,794,356,590.18
  5. Step 5: Solve for x
    x = 157,794,356,590.18/455,164.46
  6. Step 6: Final answer
    x = 346,675.48

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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.