Home / 316,105.73-436,217.06-172,862.70

Finding the Fourth Proportional to 316,105.73, 436,217.06 and 172,862.70

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Solution

The fourth proportional to 316,105.73, 436,217.06 and 172,862.70 is: 238,545.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,105.73 : 436,217.06 = 172,862.70 : x
  2. Step 2: Convert to fraction form
    316,105.73/436,217.06 = 172,862.70/x
  3. Step 3: Cross multiply
    316,105.73x = 436,217.06 × 172,862.70
  4. Step 4: Simplify right side
    316,105.73x = 75,405,658,444.80
  5. Step 5: Solve for x
    x = 75,405,658,444.80/316,105.73
  6. Step 6: Final answer
    x = 238,545.68

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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.