Home / 455,239.81-628,231.05-251,290.85

Finding the Fourth Proportional to 455,239.81, 628,231.05 and 251,290.85

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Solution

The fourth proportional to 455,239.81, 628,231.05 and 251,290.85 is: 346,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,239.81 : 628,231.05 = 251,290.85 : x
  2. Step 2: Convert to fraction form
    455,239.81/628,231.05 = 251,290.85/x
  3. Step 3: Cross multiply
    455,239.81x = 628,231.05 × 251,290.85
  4. Step 4: Simplify right side
    455,239.81x = 157,868,714,550.89
  5. Step 5: Solve for x
    x = 157,868,714,550.89/455,239.81
  6. Step 6: Final answer
    x = 346,781.43

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1.5x scale

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.