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Finding the Fourth Proportional to 455,352.16, 628,383.02 and 251,415.78

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Solution

The fourth proportional to 455,352.16, 628,383.02 and 251,415.78 is: 346,952.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,352.16 : 628,383.02 = 251,415.78 : x
  2. Step 2: Convert to fraction form
    455,352.16/628,383.02 = 251,415.78/x
  3. Step 3: Cross multiply
    455,352.16x = 628,383.02 × 251,415.78
  4. Step 4: Simplify right side
    455,352.16x = 157,985,407,112.06
  5. Step 5: Solve for x
    x = 157,985,407,112.06/455,352.16
  6. Step 6: Final answer
    x = 346,952.14

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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.