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Finding the Fourth Proportional to 455,875.20, 629,107.20 and 254,671.20

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Solution

The fourth proportional to 455,875.20, 629,107.20 and 254,671.20 is: 351,445.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,875.20 : 629,107.20 = 254,671.20 : x
  2. Step 2: Convert to fraction form
    455,875.20/629,107.20 = 254,671.20/x
  3. Step 3: Cross multiply
    455,875.20x = 629,107.20 × 254,671.20
  4. Step 4: Simplify right side
    455,875.20x = 160,215,485,552.64
  5. Step 5: Solve for x
    x = 160,215,485,552.64/455,875.20
  6. Step 6: Final answer
    x = 351,445.93

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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.