Home / 515,586.06-772,464.06-215,406

Finding the Fourth Proportional to 515,586.06, 772,464.06 and 215,406

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Solution

The fourth proportional to 515,586.06, 772,464.06 and 215,406 is: 322,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,586.06 : 772,464.06 = 215,406 : x
  2. Step 2: Convert to fraction form
    515,586.06/772,464.06 = 215,406/x
  3. Step 3: Cross multiply
    515,586.06x = 772,464.06 × 215,406
  4. Step 4: Simplify right side
    515,586.06x = 166,393,393,308.36
  5. Step 5: Solve for x
    x = 166,393,393,308.36/515,586.06
  6. Step 6: Final answer
    x = 322,726.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.