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Finding the Fourth Proportional to 307,812.15, 424,787.90 and 193,095.62

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Solution

The fourth proportional to 307,812.15, 424,787.90 and 193,095.62 is: 266,476.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,812.15 : 424,787.90 = 193,095.62 : x
  2. Step 2: Convert to fraction form
    307,812.15/424,787.90 = 193,095.62/x
  3. Step 3: Cross multiply
    307,812.15x = 424,787.90 × 193,095.62
  4. Step 4: Simplify right side
    307,812.15x = 82,024,682,919.00
  5. Step 5: Solve for x
    x = 82,024,682,919.00/307,812.15
  6. Step 6: Final answer
    x = 266,476.43

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1.5x scale

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.