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Finding the Fourth Proportional to 455,876.45, 629,108.93 and 254,672.45

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Solution

The fourth proportional to 455,876.45, 629,108.93 and 254,672.45 is: 351,447.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,876.45 : 629,108.93 = 254,672.45 : x
  2. Step 2: Convert to fraction form
    455,876.45/629,108.93 = 254,672.45/x
  3. Step 3: Cross multiply
    455,876.45x = 629,108.93 × 254,672.45
  4. Step 4: Simplify right side
    455,876.45x = 160,216,711,246.62
  5. Step 5: Solve for x
    x = 160,216,711,246.62/455,876.45
  6. Step 6: Final answer
    x = 351,447.66

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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.