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Finding the Fourth Proportional to 455,563, 628,715.84 and 254,397.88

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Solution

The fourth proportional to 455,563, 628,715.84 and 254,397.88 is: 351,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,563 : 628,715.84 = 254,397.88 : x
  2. Step 2: Convert to fraction form
    455,563/628,715.84 = 254,397.88/x
  3. Step 3: Cross multiply
    455,563x = 628,715.84 × 254,397.88
  4. Step 4: Simplify right side
    455,563x = 159,943,976,818.42
  5. Step 5: Solve for x
    x = 159,943,976,818.42/455,563
  6. Step 6: Final answer
    x = 351,090.80

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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.