Home / 257,981.46-387,083.07-133,409.94

Finding the Fourth Proportional to 257,981.46, 387,083.07 and 133,409.94

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Solution

The fourth proportional to 257,981.46, 387,083.07 and 133,409.94 is: 200,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,981.46 : 387,083.07 = 133,409.94 : x
  2. Step 2: Convert to fraction form
    257,981.46/387,083.07 = 133,409.94/x
  3. Step 3: Cross multiply
    257,981.46x = 387,083.07 × 133,409.94
  4. Step 4: Simplify right side
    257,981.46x = 51,640,729,143.72
  5. Step 5: Solve for x
    x = 51,640,729,143.72/257,981.46
  6. Step 6: Final answer
    x = 200,172.25

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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.