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Finding the Fourth Proportional to 455,170.98, 628,135.56 and 253,966.98

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Solution

The fourth proportional to 455,170.98, 628,135.56 and 253,966.98 is: 350,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,170.98 : 628,135.56 = 253,966.98 : x
  2. Step 2: Convert to fraction form
    455,170.98/628,135.56 = 253,966.98/x
  3. Step 3: Cross multiply
    455,170.98x = 628,135.56 × 253,966.98
  4. Step 4: Simplify right side
    455,170.98x = 159,525,691,203.81
  5. Step 5: Solve for x
    x = 159,525,691,203.81/455,170.98
  6. Step 6: Final answer
    x = 350,474.21

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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.