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Finding the Fourth Proportional to 455,208.67, 628,251.21 and 254,017.63

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Solution

The fourth proportional to 455,208.67, 628,251.21 and 254,017.63 is: 350,579.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,208.67 : 628,251.21 = 254,017.63 : x
  2. Step 2: Convert to fraction form
    455,208.67/628,251.21 = 254,017.63/x
  3. Step 3: Cross multiply
    455,208.67x = 628,251.21 × 254,017.63
  4. Step 4: Simplify right side
    455,208.67x = 159,586,878,997.49
  5. Step 5: Solve for x
    x = 159,586,878,997.49/455,208.67
  6. Step 6: Final answer
    x = 350,579.62

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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.