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Finding the Fourth Proportional to 455,283.64, 628,274.94 and 251,330.18

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Solution

The fourth proportional to 455,283.64, 628,274.94 and 251,330.18 is: 346,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,283.64 : 628,274.94 = 251,330.18 : x
  2. Step 2: Convert to fraction form
    455,283.64/628,274.94 = 251,330.18/x
  3. Step 3: Cross multiply
    455,283.64x = 628,274.94 × 251,330.18
  4. Step 4: Simplify right side
    455,283.64x = 157,904,453,759.69
  5. Step 5: Solve for x
    x = 157,904,453,759.69/455,283.64
  6. Step 6: Final answer
    x = 346,826.55

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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.