Home / 257,982.21-387,084.20-133,410.69

Finding the Fourth Proportional to 257,982.21, 387,084.20 and 133,410.69

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Solution

The fourth proportional to 257,982.21, 387,084.20 and 133,410.69 is: 200,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,982.21 : 387,084.20 = 133,410.69 : x
  2. Step 2: Convert to fraction form
    257,982.21/387,084.20 = 133,410.69/x
  3. Step 3: Cross multiply
    257,982.21x = 387,084.20 × 133,410.69
  4. Step 4: Simplify right side
    257,982.21x = 51,641,169,543.04
  5. Step 5: Solve for x
    x = 51,641,169,543.04/257,982.21
  6. Step 6: Final answer
    x = 200,173.37

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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.