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Finding the Fourth Proportional to 455,290.65, 628,303.11 and 251,343.25

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Solution

The fourth proportional to 455,290.65, 628,303.11 and 251,343.25 is: 346,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,290.65 : 628,303.11 = 251,343.25 : x
  2. Step 2: Convert to fraction form
    455,290.65/628,303.11 = 251,343.25/x
  3. Step 3: Cross multiply
    455,290.65x = 628,303.11 × 251,343.25
  4. Step 4: Simplify right side
    455,290.65x = 157,919,747,380.42
  5. Step 5: Solve for x
    x = 157,919,747,380.42/455,290.65
  6. Step 6: Final answer
    x = 346,854.80

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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.