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Finding the Fourth Proportional to 307,812.39, 424,788.25 and 193,095.87

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Solution

The fourth proportional to 307,812.39, 424,788.25 and 193,095.87 is: 266,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,812.39 : 424,788.25 = 193,095.87 : x
  2. Step 2: Convert to fraction form
    307,812.39/424,788.25 = 193,095.87/x
  3. Step 3: Cross multiply
    307,812.39x = 424,788.25 × 193,095.87
  4. Step 4: Simplify right side
    307,812.39x = 82,024,856,699.53
  5. Step 5: Solve for x
    x = 82,024,856,699.53/307,812.39
  6. Step 6: Final answer
    x = 266,476.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.