Home / 515,535.90-772,388.82-215,355.84

Finding the Fourth Proportional to 515,535.90, 772,388.82 and 215,355.84

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Solution

The fourth proportional to 515,535.90, 772,388.82 and 215,355.84 is: 322,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,535.90 : 772,388.82 = 215,355.84 : x
  2. Step 2: Convert to fraction form
    515,535.90/772,388.82 = 215,355.84/x
  3. Step 3: Cross multiply
    515,535.90x = 772,388.82 × 215,355.84
  4. Step 4: Simplify right side
    515,535.90x = 166,338,443,137.71
  5. Step 5: Solve for x
    x = 166,338,443,137.71/515,535.90
  6. Step 6: Final answer
    x = 322,651.52

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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.