Home / 409,136.09-613,787.97-172,479.20

Finding the Fourth Proportional to 409,136.09, 613,787.97 and 172,479.20

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Solution

The fourth proportional to 409,136.09, 613,787.97 and 172,479.20 is: 258,754.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,136.09 : 613,787.97 = 172,479.20 : x
  2. Step 2: Convert to fraction form
    409,136.09/613,787.97 = 172,479.20/x
  3. Step 3: Cross multiply
    409,136.09x = 613,787.97 × 172,479.20
  4. Step 4: Simplify right side
    409,136.09x = 105,865,658,035.22
  5. Step 5: Solve for x
    x = 105,865,658,035.22/409,136.09
  6. Step 6: Final answer
    x = 258,754.14

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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.