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Finding the Fourth Proportional to 515,658.45, 772,696.44 and 215,975.01

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Solution

The fourth proportional to 515,658.45, 772,696.44 and 215,975.01 is: 323,631.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,658.45 : 772,696.44 = 215,975.01 : x
  2. Step 2: Convert to fraction form
    515,658.45/772,696.44 = 215,975.01/x
  3. Step 3: Cross multiply
    515,658.45x = 772,696.44 × 215,975.01
  4. Step 4: Simplify right side
    515,658.45x = 166,883,121,355.96
  5. Step 5: Solve for x
    x = 166,883,121,355.96/515,658.45
  6. Step 6: Final answer
    x = 323,631.12

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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.