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Finding the Fourth Proportional to 515,168.42, 772,207.22 and 173,286.38

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Solution

The fourth proportional to 515,168.42, 772,207.22 and 173,286.38 is: 259,746.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,168.42 : 772,207.22 = 173,286.38 : x
  2. Step 2: Convert to fraction form
    515,168.42/772,207.22 = 173,286.38/x
  3. Step 3: Cross multiply
    515,168.42x = 772,207.22 × 173,286.38
  4. Step 4: Simplify right side
    515,168.42x = 133,812,989,902.63
  5. Step 5: Solve for x
    x = 133,812,989,902.63/515,168.42
  6. Step 6: Final answer
    x = 259,746.11

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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.