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Finding the Fourth Proportional to 455,059.31, 627,977.57 and 251,111.97

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Solution

The fourth proportional to 455,059.31, 627,977.57 and 251,111.97 is: 346,532.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,059.31 : 627,977.57 = 251,111.97 : x
  2. Step 2: Convert to fraction form
    455,059.31/627,977.57 = 251,111.97/x
  3. Step 3: Cross multiply
    455,059.31x = 627,977.57 × 251,111.97
  4. Step 4: Simplify right side
    455,059.31x = 157,692,683,462.95
  5. Step 5: Solve for x
    x = 157,692,683,462.95/455,059.31
  6. Step 6: Final answer
    x = 346,532.16

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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.