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Finding the Fourth Proportional to 455,314.65, 628,416.47 and 271,565.00

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Solution

The fourth proportional to 455,314.65, 628,416.47 and 271,565.00 is: 374,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,314.65 : 628,416.47 = 271,565.00 : x
  2. Step 2: Convert to fraction form
    455,314.65/628,416.47 = 271,565.00/x
  3. Step 3: Cross multiply
    455,314.65x = 628,416.47 × 271,565.00
  4. Step 4: Simplify right side
    455,314.65x = 170,655,914,175.64
  5. Step 5: Solve for x
    x = 170,655,914,175.64/455,314.65
  6. Step 6: Final answer
    x = 374,808.75

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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.