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Finding the Fourth Proportional to 455,314.18, 628,415.81 and 271,564.52

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Solution

The fourth proportional to 455,314.18, 628,415.81 and 271,564.52 is: 374,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,314.18 : 628,415.81 = 271,564.52 : x
  2. Step 2: Convert to fraction form
    455,314.18/628,415.81 = 271,564.52/x
  3. Step 3: Cross multiply
    455,314.18x = 628,415.81 × 271,564.52
  4. Step 4: Simplify right side
    455,314.18x = 170,655,440,387.56
  5. Step 5: Solve for x
    x = 170,655,440,387.56/455,314.18
  6. Step 6: Final answer
    x = 374,808.10

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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.