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Finding the Fourth Proportional to 627,138.65, 940,707.98 and 272,144.81

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Solution

The fourth proportional to 627,138.65, 940,707.98 and 272,144.81 is: 408,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,138.65 : 940,707.98 = 272,144.81 : x
  2. Step 2: Convert to fraction form
    627,138.65/940,707.98 = 272,144.81/x
  3. Step 3: Cross multiply
    627,138.65x = 940,707.98 × 272,144.81
  4. Step 4: Simplify right side
    627,138.65x = 256,008,796,494.17
  5. Step 5: Solve for x
    x = 256,008,796,494.17/627,138.65
  6. Step 6: Final answer
    x = 408,217.22

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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.