Home / 455,209.56-628,189.25-251,260.55

Finding the Fourth Proportional to 455,209.56, 628,189.25 and 251,260.55

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Solution

The fourth proportional to 455,209.56, 628,189.25 and 251,260.55 is: 346,739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,209.56 : 628,189.25 = 251,260.55 : x
  2. Step 2: Convert to fraction form
    455,209.56/628,189.25 = 251,260.55/x
  3. Step 3: Cross multiply
    455,209.56x = 628,189.25 × 251,260.55
  4. Step 4: Simplify right side
    455,209.56x = 157,839,173,946.29
  5. Step 5: Solve for x
    x = 157,839,173,946.29/455,209.56
  6. Step 6: Final answer
    x = 346,739.59

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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.