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Finding the Fourth Proportional to 455,287.76, 628,298.04 and 251,338.95

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Solution

The fourth proportional to 455,287.76, 628,298.04 and 251,338.95 is: 346,848.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,287.76 : 628,298.04 = 251,338.95 : x
  2. Step 2: Convert to fraction form
    455,287.76/628,298.04 = 251,338.95/x
  3. Step 3: Cross multiply
    455,287.76x = 628,298.04 × 251,338.95
  4. Step 4: Simplify right side
    455,287.76x = 157,915,769,660.66
  5. Step 5: Solve for x
    x = 157,915,769,660.66/455,287.76
  6. Step 6: Final answer
    x = 346,848.27

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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.