Home / 515,035.20-772,552.80-215,416.20

Finding the Fourth Proportional to 515,035.20, 772,552.80 and 215,416.20

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Solution

The fourth proportional to 515,035.20, 772,552.80 and 215,416.20 is: 323,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,035.20 : 772,552.80 = 215,416.20 : x
  2. Step 2: Convert to fraction form
    515,035.20/772,552.80 = 215,416.20/x
  3. Step 3: Cross multiply
    515,035.20x = 772,552.80 × 215,416.20
  4. Step 4: Simplify right side
    515,035.20x = 166,420,388,475.36
  5. Step 5: Solve for x
    x = 166,420,388,475.36/515,035.20
  6. Step 6: Final answer
    x = 323,124.30

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Similar ratio
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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.