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Finding the Fourth Proportional to 455,059.16, 627,983.70 and 251,112.68

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Solution

The fourth proportional to 455,059.16, 627,983.70 and 251,112.68 is: 346,536.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,059.16 : 627,983.70 = 251,112.68 : x
  2. Step 2: Convert to fraction form
    455,059.16/627,983.70 = 251,112.68/x
  3. Step 3: Cross multiply
    455,059.16x = 627,983.70 × 251,112.68
  4. Step 4: Simplify right side
    455,059.16x = 157,694,669,903.32
  5. Step 5: Solve for x
    x = 157,694,669,903.32/455,059.16
  6. Step 6: Final answer
    x = 346,536.63

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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.