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Finding the Fourth Proportional to 455,003.12, 627,900.04 and 251,055.92

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Solution

The fourth proportional to 455,003.12, 627,900.04 and 251,055.92 is: 346,454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,003.12 : 627,900.04 = 251,055.92 : x
  2. Step 2: Convert to fraction form
    455,003.12/627,900.04 = 251,055.92/x
  3. Step 3: Cross multiply
    455,003.12x = 627,900.04 × 251,055.92
  4. Step 4: Simplify right side
    455,003.12x = 157,638,022,210.24
  5. Step 5: Solve for x
    x = 157,638,022,210.24/455,003.12
  6. Step 6: Final answer
    x = 346,454.82

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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.